{"product_id":"cooling-gel-king-mattress-12-inch-4-layer-certipur-us","title":"Cooling Gel King Mattress – 12-Inch, 4-Layer Foam, 7-Zone Support, Cer","description":"\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0990\/1798\/2256\/files\/3b1c1d69-e2d6-4b9d-830f-d111290b7514_a5f49c5e-cc59-424a-b384-f565606c8940.jpg?v=1788159700\" alt=\"12-inch cooling gel king mattress on bed frame showing two-tone upholstered cover - Nook \u0026amp; Nest\" style=\"max-width:100%;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0990\/1798\/2256\/files\/41a87c5d-841a-40ef-a1e5-e6f18cf63e46_7204a257-6f96-42ac-a3aa-c982ac03717b.jpg?v=1788159703\" alt=\"Cooling gel king mattress 4-layer foam cross-section diagram - Nook \u0026amp; Nest\" style=\"max-width:100%;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0990\/1798\/2256\/files\/5fd1d197-e814-4449-b0a0-609cde71dbc4_3ea472ad-a9d5-4bd5-879d-a430d435bec3.jpg?v=1788517257\" alt=\"King mattress 7-zone pressure relief diagram showing body support zones - Nook \u0026amp; Nest\" style=\"max-width:100%;\"\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eA practical cooling gel king mattress – 12-inch, 4-layer foam, 7-zone support, cer designed for everyday home use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Layer Foam Construction:\u003c\/strong\u003e Cooling gel layer + dynamic adjustment layer + 7-zone support layer + high-density base foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-Zone Pressure Relief:\u003c\/strong\u003e Differentiated support zones for head, shoulders, lumbar, hips, and legs — reduces pressure points and improves spinal alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Gel Foam:\u003c\/strong\u003e Draws heat away from the body and encourages airflow for a cooler sleep surface throughout the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-Friendly \u0026amp; Antimicrobial:\u003c\/strong\u003e Foam resists allergens and is free from harmful chemicals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Certified:\u003c\/strong\u003e CertiPUR-US • OEKO-TEX Standard 100 • CFR-1633 fire safety standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMattress-in-a-Box Delivery:\u003c\/strong\u003e Ships compressed; unroll and allow 48–72 hours to expand fully.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0990\/1798\/2256\/files\/5fd1d197-e814-4449-b0a0-609cde71dbc4_3ea472ad-a9d5-4bd5-879d-a430d435bec3.jpg?v=1788517257\" alt=\"King mattress 7-zone pressure relief diagram showing body support zones - Nook \u0026amp; Nest\" style=\"max-width:100%;\"\u003e\u003c\/p\u003e\u003ch2\u003eCustomer Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMakes everyday routines simpler.\u003c\/li\u003e\n\u003cli\u003eHelps create a neater, more comfortable space.\u003c\/li\u003e\n\u003cli\u003eEasy to coordinate with your existing home setup.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSize \u0026amp; Fit\u003c\/h2\u003e\u003cp\u003eAvailable size or fit references in this listing: King, Standard. Match the selected variant to your space or existing item before ordering.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSmall-space homes that need a practical mattresses solution.\u003c\/li\u003e\n\u003cli\u003eEveryday routines where the listed features can simplify use or reduce clutter.\u003c\/li\u003e\n\u003cli\u003eShoppers who have measured their space and confirmed the selected variant details.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cp\u003eThe current listing includes the product shown and the components identified in the selected variant details. Review the product images and specifications before ordering.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSize: King\u003c\/li\u003e\n\u003cli\u003eDimensions: 80″L × 76″W × 12″H\u003c\/li\u003e\n\u003cli\u003eConstruction: 4-layer foam (cooling gel \/ dynamic adjustment \/ 7-zone support \/ high-density base)\u003c\/li\u003e\n\u003cli\u003eCover: Two-tone upholstery with decorative stitching\u003c\/li\u003e\n\u003cli\u003eWeight: 82 lbs (37.9kg)\u003c\/li\u003e\n\u003cli\u003eCertifications: CertiPUR-US, OEKO-TEX Standard 100, CFR-1633\u003c\/li\u003e\n\u003cli\u003eColour: White\u003c\/li\u003e\n\u003cli\u003eDelivery: Compressed in box; expands within 48–72 hours\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA well-certified, high-specification king mattress for master bedrooms. Fast US shipping.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eNeed help choosing?\u003c\/strong\u003e\u003cbr\u003eContact us and we will be happy to help with product details and available options.\u003c\/p\u003e\u003ch2\u003eCare, Shipping \u0026amp; Returns\u003c\/h2\u003e\u003cp\u003eFollow the care label and product-specific guidance. Orders generally arrive within 2–5 business days in the United States. Hassle-free 30-day returns are accepted; see our \u003ca href=\"\/policies\/refund-policy\"\u003ereturn policy\u003c\/a\u003e for details.\u003c\/p\u003e","brand":"Nook \u0026 Nest","offers":[{"title":"White","offer_id":67497065218352,"sku":"CJFU29203180001","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0990\/1798\/2256\/files\/3b1c1d69-e2d6-4b9d-830f-d111290b7514_a5f49c5e-cc59-424a-b384-f565606c8940.jpg?v=1788159700","url":"https:\/\/mynookandnest.com\/products\/cooling-gel-king-mattress-12-inch-4-layer-certipur-us","provider":"Nook \u0026 Nest","version":"1.0","type":"link"}