{
  "schema": "benchpicked_consumer_research_export.v1",
  "route": "/grounding/grounding-sheet-vs-earthing-mat/",
  "product_id": "grounding-sheet-vs-earthing-mat",
  "revision": "2026-10-12-grounding-format-comparison",
  "page_content_hash": "6803566f5ccd0fa75610ee998fbe80dd7da58ebce4d11aaa25cfb0e7e2932dc7",
  "market": "US",
  "currency": "USD",
  "is_benchpicked_measurement": false,
  "reader_task": "Choose a grounding format by contact area, intended use, care and purchase conditions without inferring a medical benefit.",
  "freshness": "maintenance_due",
  "freshness_assessed_at": "2026-11-04T01:23:50.239Z",
  "facts": [
    {
      "attribute": "intended_use",
      "condition": "Standard fitted sheet replaces a normal fitted sheet; Queen example covers 60 x 80 in. Direct skin contact is the maker's instruction.",
      "id": "0-intended_use",
      "locator": "Standard Grounding Fitted Sheets: use and Queen option",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-product",
      "state": "documented",
      "unit": "",
      "value": [
        "sleep"
      ],
      "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:05:35.718Z",
      "maintenance_due": false
    },
    {
      "attribute": "intended_use",
      "condition": "The maker lists sleep, work and relaxation for this 12.5 x 29 in mat; it is not a full-bed cover.",
      "id": "1-intended_use",
      "locator": "Universal Mat: What is the Universal Mat Kit?",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "",
      "value": [
        "sleep",
        "work",
        "relax"
      ],
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": false
    },
    {
      "attribute": "intended_use",
      "condition": "The maker specifies skin contact, or a thin layer whose moisture may enable contact; it favors cotton/bamboo and excludes fully synthetic fabric. This is not independently verified contact through your bedding.",
      "id": "2-intended_use",
      "locator": "Mattress Cover: setup step 4 and recommended materials",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "",
      "value": [
        "sleep"
      ],
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": false
    },
    {
      "attribute": "care",
      "condition": "Warm wash up to 40 C; low dryer up to 65 C. Avoid bleach, softener and oxidizing cleaners.",
      "id": "0-care",
      "locator": "Pages 3-4: washing and caring",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-manual",
      "state": "documented",
      "unit": "",
      "value": "machine_wash",
      "source_url": "https://www.groundology.co.uk/userguides/Groundology_User_Guide_A5.pdf",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-12T04:05:43.393Z",
      "maintenance_due": false
    },
    {
      "attribute": "care",
      "condition": "Mild soap and water, then air dry; no oils or harsh cleaning agents.",
      "id": "1-care",
      "locator": "How do I clean the Universal Mat?",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "",
      "value": "wipe",
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": false
    },
    {
      "attribute": "care",
      "condition": "Mild soap and water, then air dry; this is not a machine-wash textile.",
      "id": "2-care",
      "locator": "Mattress Cover: care instructions",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "",
      "value": "wipe",
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": false
    },
    {
      "attribute": "dimensions",
      "condition": "Queen standard fitted option, not High-Silver, half-sheet or undersheet.",
      "id": "0-dimensions",
      "locator": "Standard fitted sheet: USA Queen 152 x 203 cm",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-product",
      "state": "documented",
      "unit": "in",
      "value": "60 x 80",
      "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:05:35.718Z",
      "maintenance_due": false
    },
    {
      "attribute": "dimensions",
      "condition": "Single-kit mat size; do not substitute a mattress-cover size.",
      "id": "1-dimensions",
      "locator": "Universal Mat: dimensions",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "in",
      "value": "12.5 x 29",
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": false
    },
    {
      "attribute": "dimensions",
      "condition": "Queen option only; other sizes and prices are separate.",
      "id": "2-dimensions",
      "locator": "Queen size option",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "in",
      "value": "60 x 80",
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": false
    },
    {
      "attribute": "material",
      "condition": "Maker description, not an independently verified fibre percentage.",
      "id": "0-material",
      "locator": "Standard Grounding Fitted Sheets: material",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-product",
      "state": "documented",
      "unit": "",
      "value": "Cotton textile with conductive silver fibres",
      "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:05:35.718Z",
      "maintenance_due": false
    },
    {
      "attribute": "material",
      "condition": "Maker description; no independent composition or conductivity measurement in this comparison.",
      "id": "1-material",
      "locator": "Universal Mat: material",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "",
      "value": "Carbon-based surface",
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": false
    },
    {
      "attribute": "material",
      "condition": "Maker description; no service-life conclusion from the material label.",
      "id": "2-material",
      "locator": "Mattress Cover: construction",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "",
      "value": "Carbon-based cover",
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": false
    },
    {
      "attribute": "kit",
      "condition": "Outlet tester is an optional extra, not assumed included.",
      "id": "0-kit",
      "locator": "What's included; connection options",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-product",
      "state": "documented",
      "unit": "",
      "value": "Sheet + 15 ft cord; select North American connection",
      "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:05:35.718Z",
      "maintenance_due": false
    },
    {
      "attribute": "kit",
      "condition": "Single kit only; two-pack contents are separate.",
      "id": "1-kit",
      "locator": "Universal Mat kit: contents",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "",
      "value": "Mat + 15 ft coil cord + US adapter + outlet checker",
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": false
    },
    {
      "attribute": "kit",
      "condition": "Listed package; verify the exact size and included accessories before paying.",
      "id": "2-kit",
      "locator": "Mattress Cover: package contents",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "",
      "value": "Cover + 15 ft coil cord + US adapter + outlet checker + product tester kit",
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": false
    },
    {
      "attribute": "price_context",
      "condition": "US display is a conversion estimate. UK dispatch and checkout import options affect the total; no USD delivered quote is assumed.",
      "id": "0-price_context",
      "locator": "Payment currencies; delivery and import taxes",
      "market": "US",
      "max_age_days": 7,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-terms",
      "state": "documented",
      "unit": "",
      "value": "GBP checkout; USD display approximate",
      "source_url": "https://www.groundology.com/us/terms",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:06:22.779Z",
      "maintenance_due": true
    },
    {
      "attribute": "price_context",
      "condition": "Dated single-kit listing, before any checkout tax or delivery charge; not a price guarantee.",
      "id": "1-price_context",
      "locator": "Single kit price option",
      "market": "US",
      "max_age_days": 1,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-mat",
      "state": "documented",
      "unit": "USD",
      "value": 59.99,
      "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:51:46.679Z",
      "maintenance_due": true
    },
    {
      "attribute": "price_context",
      "condition": "Dated Queen option, not the default California King price; delivered total unknown.",
      "id": "2-price_context",
      "locator": "Queen option price",
      "market": "US",
      "max_age_days": 1,
      "model": "earthing-mattress-cover",
      "source_id": "e-cover",
      "state": "documented",
      "unit": "USD",
      "value": 134.99,
      "source_url": "https://www.earthing.com/products/earthing-mattress-cover",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:47:16.653Z",
      "maintenance_due": true
    },
    {
      "attribute": "return_context",
      "condition": "Non-defect personal-item returns only; buyer pays return delivery.",
      "id": "0-return_context",
      "locator": "Refund policy; personal use items",
      "market": "US",
      "max_age_days": 30,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "g-terms",
      "state": "documented",
      "unit": "",
      "value": "14 days from receipt; unused/resaleable",
      "source_url": "https://www.groundology.com/us/terms",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T04:06:22.779Z",
      "maintenance_due": false
    },
    {
      "attribute": "return_context",
      "condition": "Return within 30 days of RMA issue; buyer pays return delivery and original shipping is generally not refunded.",
      "id": "1-return_context",
      "locator": "Return policy",
      "market": "US",
      "max_age_days": 30,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "e-returns",
      "state": "documented",
      "unit": "",
      "value": "45 days from order; RMA required",
      "source_url": "https://www.earthing.com/pages/return-policy",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:52:49.033Z",
      "maintenance_due": false
    },
    {
      "attribute": "return_context",
      "condition": "Same merchant policy, not a transferable other-brand guarantee.",
      "id": "2-return_context",
      "locator": "Return policy",
      "market": "US",
      "max_age_days": 30,
      "model": "earthing-mattress-cover",
      "source_id": "e-returns",
      "state": "documented",
      "unit": "",
      "value": "45 days from order; RMA required",
      "source_url": "https://www.earthing.com/pages/return-policy",
      "source_type": "manufacturer",
      "checked_at": "2026-10-12T03:52:49.033Z",
      "maintenance_due": false
    },
    {
      "attribute": "matched_independent_measurement",
      "condition": "No matched independent physical comparison was admitted from this research; this is not evidence that no tests exist.",
      "id": "0-matched_independent_measurement",
      "locator": "Research scope and limits",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "research-method",
      "state": "not_established",
      "unit": "",
      "value": null,
      "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
      "source_type": "editorial_method",
      "checked_at": "2026-10-12T09:25:38Z",
      "maintenance_due": false
    },
    {
      "attribute": "matched_independent_measurement",
      "condition": "No matched independent physical comparison was admitted from this research; this is not evidence that no tests exist.",
      "id": "1-matched_independent_measurement",
      "locator": "Research scope and limits",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-universal-mat-single-kit",
      "source_id": "research-method",
      "state": "not_established",
      "unit": "",
      "value": null,
      "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
      "source_type": "editorial_method",
      "checked_at": "2026-10-12T09:25:38Z",
      "maintenance_due": false
    },
    {
      "attribute": "matched_independent_measurement",
      "condition": "No matched independent physical comparison was admitted from this research; this is not evidence that no tests exist.",
      "id": "2-matched_independent_measurement",
      "locator": "Research scope and limits",
      "market": "US",
      "max_age_days": 90,
      "model": "earthing-mattress-cover",
      "source_id": "research-method",
      "state": "not_established",
      "unit": "",
      "value": null,
      "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
      "source_type": "editorial_method",
      "checked_at": "2026-10-12T09:25:38Z",
      "maintenance_due": false
    },
    {
      "attribute": "portability_context",
      "condition": "No matched portability ranking was established. The dated Mattress Cover travel account is one owner's experience, not a sheet/mat category rule.",
      "id": "0-portability_context",
      "locator": "Research scope and limits",
      "market": "US",
      "max_age_days": 90,
      "model": "groundology-standard-fitted-sheet",
      "source_id": "research-method",
      "state": "not_established",
      "unit": "",
      "value": null,
      "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
      "source_type": "editorial_method",
      "checked_at": "2026-10-12T09:25:38Z",
      "maintenance_due": false
    }
  ],
  "sources": [
    {
      "checked_at": "2026-10-12T04:05:35.718Z",
      "id": "g-product",
      "label": "Groundology US standard fitted sheet",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.groundology.com/us/earthing/grounding-sheets",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T04:05:43.393Z",
      "id": "g-manual",
      "label": "Groundology user guide (copyright 2020)",
      "status": "active",
      "type": "manufacturer_manual",
      "url": "https://www.groundology.co.uk/userguides/Groundology_User_Guide_A5.pdf",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T04:06:22.779Z",
      "id": "g-terms",
      "label": "Groundology US purchase terms",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.groundology.com/us/terms",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T03:51:46.679Z",
      "id": "e-mat",
      "label": "Earthing Universal Mat kit",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.earthing.com/products/earthing-universal-mat-kit",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T03:47:16.653Z",
      "id": "e-cover",
      "label": "Earthing Mattress Cover",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.earthing.com/products/earthing-mattress-cover",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T03:52:49.033Z",
      "id": "e-returns",
      "label": "Earthing return terms",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.earthing.com/pages/return-policy",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T03:58:31.170Z",
      "id": "rt110",
      "label": "Klein RT110 tester limitations",
      "status": "active",
      "type": "manufacturer",
      "url": "https://www.kleintools.com/catalog/electrical-testers/receptacle-tester-0",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T03:47:16.653Z",
      "id": "cover-owners",
      "label": "Dated Mattress Cover reports on the merchant page",
      "model": "earthing-mattress-cover",
      "status": "active",
      "type": "owner_report",
      "url": "https://www.earthing.com/products/earthing-mattress-cover#judgeme_product_reviews",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-12T09:25:38Z",
      "id": "research-method",
      "label": "BenchPicked research scope",
      "status": "active",
      "type": "editorial_method",
      "url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
      "use_scope": "bounded_editorial_summary"
    }
  ],
  "comparison_subjects": [
    {
      "label": "Groundology standard fitted sheet (Queen)",
      "model": "groundology-standard-fitted-sheet",
      "source_ids": [
        "g-product",
        "g-manual",
        "g-terms",
        "research-method"
      ]
    },
    {
      "label": "Earthing Universal Mat (single kit)",
      "model": "earthing-universal-mat-single-kit",
      "source_ids": [
        "e-mat",
        "e-returns",
        "research-method"
      ]
    },
    {
      "label": "Earthing Mattress Cover (Queen option)",
      "model": "earthing-mattress-cover",
      "source_ids": [
        "e-cover",
        "e-returns",
        "cover-owners",
        "research-method"
      ]
    }
  ],
  "comparison_short_labels": [
    "Sheet",
    "Mat",
    "Cover"
  ],
  "tools": {
    "grounding_fit": [
      {
        "care_fact": "0-care",
        "model": "groundology-standard-fitted-sheet",
        "use_fact": "0-intended_use"
      },
      {
        "care_fact": "1-care",
        "model": "earthing-universal-mat-single-kit",
        "use_fact": "1-intended_use"
      },
      {
        "care_fact": "2-care",
        "model": "earthing-mattress-cover",
        "use_fact": "2-intended_use"
      }
    ]
  },
  "third_party": {
    "heading": "Contact and electrical limits",
    "source_ids": [
      "g-manual",
      "rt110"
    ],
    "summary": "Manufacturer specifications, not BenchPicked tests. No matched comparison supports durability or health rankings.",
    "interpretation": "Use supplied equipment and exact instructions; avoid cord trip/tangle paths. Uncertain wiring or incorrect outlet results require a qualified electrician, not improvised connections.",
    "disagreement": "RT110 is an illustrative tester, not an identified kit checker. It cannot establish ground quality or every wiring defect. Lights, continuity or body voltage do not certify safety.",
    "method": "The Groundology guide carries a 2020 copyright; US terms were checked separately. Layering claims are not measured contact through dry bedding."
  },
  "owner_context": {
    "sample_count": 2,
    "overview": "Two distinct merchant-page reporting accounts illustrate fit/travel and comfort/accessory concerns. These reports concern the Mattress Cover, not the Universal Mat or Groundology sheet.",
    "method": "Ten initially embedded records: five per merchant product page. Labels, available bodies and dates were reviewed; identities and purchase tags are not independently verified. Review IDs locate originals.",
    "excluded": "Eight records were excluded: mixed products, a not-yet-received order, anonymous identity, generic gifting or health-only claims. No eligible Universal Mat owner record emerged in this finite read; this does not mean none exists.",
    "reports": [
      {
        "source_id": "cover-owners",
        "model": "earthing-mattress-cover",
        "date": "2026-08-05",
        "original_key": "120a9e44-f6cd-40b9-8a64-9f6c60404943",
        "summary": "One reporter described a good Queen fit and taking a cover while travelling.",
        "context": "Mattress Cover only; a dated personal account, not a measurement or typical-user result. Health and sleep-effect statements were not adopted.",
        "locator": "A Perfect Fit, 2026-08-05; review 120a9e44",
        "deep_link": "https://www.earthing.com/products/earthing-mattress-cover#judgeme_product_reviews",
        "evidence_type": "owner_self_report",
        "is_benchpicked_data": false
      },
      {
        "source_id": "cover-owners",
        "model": "earthing-mattress-cover",
        "date": "2026-07-20",
        "original_key": "8cf21b8d-2f75-4986-8c6f-995dd47bf3c7",
        "summary": "Another reporter found the surface uncomfortable and said a product tester was missing.",
        "context": "Size unreported; the review described adding cotton sheets. This does not establish a Queen-size defect, current kit shortage or compatibility through every fabric.",
        "locator": "sleep, 2026-07-20; review 8cf21b8d",
        "deep_link": "https://www.earthing.com/products/earthing-mattress-cover#judgeme_product_reviews",
        "evidence_type": "owner_self_report",
        "is_benchpicked_data": false
      }
    ],
    "buyer_implication": "Check bedding feel, the exact size and the delivered accessory list. These two accounts do not estimate failure rates, typical comfort, longevity or health outcomes."
  },
  "ownership": {
    "heading": "Before ordering or connecting",
    "sections": [
      {
        "body": "Groundology: GBP settlement, indicative USD and checkout import options. Check the landed total. Unused/resaleable personal-item return conditions are not a sleep trial.",
        "heading": "Check the final order",
        "source_id": "g-terms"
      },
      {
        "body": "Earthing: 45 days from order, not delivery. Obtain an RMA; check postage and original-shipping exclusions for your order.",
        "heading": "Check the return clock",
        "source_id": "e-returns"
      }
    ]
  },
  "maintenance": {
    "changes": [
      {
        "date": "2026-10-12",
        "note": "Exact-product comparison and use/care filter; review repaired editorial provenance, contact conditions, FAQ and historical applicability. Original publication and source dates retained."
      }
    ],
    "method": "Exact-product US pages, a saved 2020 manual, public comparative-test searches and ten embedded reviews were reviewed. No matched independent comparison was admitted; restricted/mismatched entries were excluded. This editorial finding is not a manufacturer claim or proof no tests exist.",
    "owner": "BenchPicked editorial desk",
    "policy": "Refresh short-lived listings before purchase. Unknown comparative measurements stay unestablished, not zero. Material labels and owner feedback do not substantiate medical effects."
  },
  "decision_support": {
    "fit_conditions": [
      {
        "fact_ids": [
          "0-intended_use",
          "0-care",
          "0-dimensions",
          "2-care"
        ],
        "text": "Washable bedding: the Groundology fitted sheet; its maker specifies direct skin contact."
      },
      {
        "fact_ids": [
          "1-intended_use",
          "1-dimensions"
        ],
        "text": "Desk or movable surface: the Universal Mat, not a full-bed cover."
      },
      {
        "fact_ids": [
          "2-intended_use",
          "2-care",
          "2-dimensions"
        ],
        "text": "Wipe-clean bed surface: the Mattress Cover; check its fabric/contact conditions and comfort context."
      },
      {
        "fact_ids": [
          "0-price_context",
          "1-price_context",
          "2-price_context",
          "0-matched_independent_measurement"
        ],
        "text": "Do not rank formats by price or lifespan: delivered totals differ, and no matched service-life comparison was established."
      }
    ]
  },
  "content_revised_at": "2026-10-12",
  "historical_comparison_records": {
    "caption": "Grounding sheet vs earthing mat: key differences",
    "headers": [
      "Dimension",
      "Grounding Sheet",
      "Earthing Mat"
    ],
    "recorded_at": null,
    "verification_scope": "historical_format_comparison_not_current_model_specification",
    "rows": [
      {
        "cells": [
          "Primary use",
          "Overnight sleep on a full or partial mattress surface.",
          "Daytime use under feet at a desk, on a couch, or on the floor."
        ],
        "qualifications": [
          {
            "column": 2,
            "fact_id": "1-intended_use",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "intended_use",
            "value": [
              "sleep",
              "work",
              "relax"
            ],
            "unit": "",
            "state": "documented",
            "condition": "The maker lists sleep, work and relaxation for this 12.5 x 29 in mat; it is not a full-bed cover.",
            "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T03:51:46.679Z"
          }
        ]
      },
      {
        "cells": [
          "Contact area",
          "Large bed surface contact, depending on size and placement.",
          "Smaller contact area, usually focused on hands or feet."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-dimensions",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "dimensions",
            "value": "60 x 80",
            "unit": "in",
            "state": "documented",
            "condition": "Queen standard fitted option, not High-Silver, half-sheet or undersheet.",
            "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T04:05:35.718Z"
          },
          {
            "column": 2,
            "fact_id": "1-dimensions",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "dimensions",
            "value": "12.5 x 29",
            "unit": "in",
            "state": "documented",
            "condition": "Single-kit mat size; do not substitute a mattress-cover size.",
            "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T03:51:46.679Z"
          }
        ]
      },
      {
        "cells": [
          "Setup",
          "Grounding cord connects to an outlet ground pin or grounding point; sheet lays on or under bedding.",
          "Grounding cord connects to an outlet ground pin or grounding point; mat sits on a flat surface."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-intended_use",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "intended_use",
            "value": [
              "sleep"
            ],
            "unit": "",
            "state": "documented",
            "condition": "Standard fitted sheet replaces a normal fitted sheet; Queen example covers 60 x 80 in. Direct skin contact is the maker's instruction.",
            "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T04:05:35.718Z"
          }
        ]
      },
      {
        "cells": [
          "Material",
          "Conductive textile such as silver thread, carbon fiber blend, or copper weave.",
          "Carbon rubber, conductive PU leather, or conductive fabric."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-material",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "material",
            "value": "Cotton textile with conductive silver fibres",
            "unit": "",
            "state": "documented",
            "condition": "Maker description, not an independently verified fibre percentage.",
            "source_url": "https://www.groundology.com/us/earthing/grounding-sheets",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T04:05:35.718Z"
          },
          {
            "column": 2,
            "fact_id": "1-material",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "material",
            "value": "Carbon-based surface",
            "unit": "",
            "state": "documented",
            "condition": "Maker description; no independent composition or conductivity measurement in this comparison.",
            "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T03:51:46.679Z"
          }
        ]
      },
      {
        "cells": [
          "Maintenance",
          "Requires regular laundering; wash-cycle durability is a key review factor.",
          "Usually wipe-clean; laundering is not required for most mat types."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-care",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "care",
            "value": "machine_wash",
            "unit": "",
            "state": "documented",
            "condition": "Warm wash up to 40 C; low dryer up to 65 C. Avoid bleach, softener and oxidizing cleaners.",
            "source_url": "https://www.groundology.co.uk/userguides/Groundology_User_Guide_A5.pdf",
            "source_type": "manufacturer_manual",
            "checked_at": "2026-10-12T04:05:43.393Z"
          },
          {
            "column": 2,
            "fact_id": "1-care",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "care",
            "value": "wipe",
            "unit": "",
            "state": "documented",
            "condition": "Mild soap and water, then air dry; no oils or harsh cleaning agents.",
            "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T03:51:46.679Z"
          }
        ]
      },
      {
        "cells": [
          "Portability",
          "Low; designed for a fixed bed setup.",
          "Moderate; can move between rooms or travel more easily."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-portability_context",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "portability_context",
            "value": null,
            "unit": "",
            "state": "not_established",
            "condition": "No matched portability ranking was established. The dated Mattress Cover travel account is one owner's experience, not a sheet/mat category rule.",
            "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
            "source_type": "editorial_method",
            "checked_at": "2026-10-12T09:25:38Z"
          }
        ]
      },
      {
        "cells": [
          "Price range",
          "Usually higher because full-bed sheets use more conductive material.",
          "Usually lower because the surface area and construction are simpler."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-price_context",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "price_context",
            "value": "GBP checkout; USD display approximate",
            "unit": "",
            "state": "documented",
            "condition": "US display is a conversion estimate. UK dispatch and checkout import options affect the total; no USD delivered quote is assumed.",
            "source_url": "https://www.groundology.com/us/terms",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T04:06:22.779Z"
          },
          {
            "column": 2,
            "fact_id": "1-price_context",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "price_context",
            "value": 59.99,
            "unit": "USD",
            "state": "documented",
            "condition": "Dated single-kit listing, before any checkout tax or delivery charge; not a price guarantee.",
            "source_url": "https://www.earthing.com/products/earthing-universal-mat-kit",
            "source_type": "manufacturer",
            "checked_at": "2026-10-12T03:51:46.679Z"
          }
        ]
      },
      {
        "cells": [
          "Durability concern",
          "Check laundering instructions and any attributed wash-durability evidence; a material label alone does not establish service life.",
          "Surface wear and cable connector strain need periodic inspection."
        ],
        "qualifications": [
          {
            "column": 1,
            "fact_id": "0-matched_independent_measurement",
            "model": "groundology-standard-fitted-sheet",
            "attribute": "matched_independent_measurement",
            "value": null,
            "unit": "",
            "state": "not_established",
            "condition": "No matched independent physical comparison was admitted from this research; this is not evidence that no tests exist.",
            "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
            "source_type": "editorial_method",
            "checked_at": "2026-10-12T09:25:38Z"
          },
          {
            "column": 2,
            "fact_id": "1-matched_independent_measurement",
            "model": "earthing-universal-mat-single-kit",
            "attribute": "matched_independent_measurement",
            "value": null,
            "unit": "",
            "state": "not_established",
            "condition": "No matched independent physical comparison was admitted from this research; this is not evidence that no tests exist.",
            "source_url": "https://benchpicked.com/grounding/grounding-sheet-vs-earthing-mat/#research-method",
            "source_type": "editorial_method",
            "checked_at": "2026-10-12T09:25:38Z"
          }
        ]
      }
    ]
  },
  "historical_claim_records": []
}