{"product_id":"full-size-mattress-12-inch-hybrid-mattress-in-a-box-medium-firm","title":"Full Size Mattress 12 Inch Hybrid Mattress in a Box - Medium Firm","description":"\u003cp\u003eOur review of the Full Size 12 Inch Hybrid Mattress in a Box finds it best suited for sleepers who want a balance of cushioning and support without complex setup. The single biggest reason to consider this mattress is the combination of CertiPUR-US gel memory foam and individually wrapped pocket coils, which together deliver targeted support and reduced motion transfer for couples and restless sleepers. It arrives compressed in a box and expands within hours, making it convenient for apartment moves or quick bedroom upgrades.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull size 54 x 75 in:\u003c\/strong\u003e Provides a standard full footprint with a 12 in profile that fits most frames and saves floor space compared with larger beds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid construction:\u003c\/strong\u003e Gel memory foam over individually wrapped pocket coils gives responsive support while isolating motion for fewer disturbances from a partner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium-firm feel:\u003c\/strong\u003e Designed to support side, back, and stomach sleepers with an emphasis on maintaining proper spinal alignment across sleep positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature regulation:\u003c\/strong\u003e Gel-infused memory foam encourages airflow and helps reduce heat retention compared with traditional dense foams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy setup:\u003c\/strong\u003e Ships compressed and expands within hours, compatible with box springs, slats, platforms, and adjustable frames for flexible installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass-free safety:\u003c\/strong\u003e Constructed without fiberglass for safer handling and longer-lasting materials.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis mattress is a good match for someone who wants a middle-ground comfort level that works for multiple sleep positions, including side and back sleepers who need a balance of pressure relief and support. It also fits buyers who value easy delivery and fast expansion after unpacking.\u003c\/p\u003e\u003cp\u003eThose seeking a very plush, sinking feel or an ultra-firm orthopedic surface may want to look elsewhere, and people who are extremely sensitive to the tactile feel of coils might notice slight spring feedback along with the foam comfort layer.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComfortable blend of gel memory foam and pocket coils provides pressure relief and support for varied sleepers.\u003c\/li\u003e\n\u003cli\u003eIndividual coils reduce motion transfer, helpful for couples and light-sleepers.\u003c\/li\u003e\n\u003cli\u003eArrives compressed and expands quickly, making setup straightforward in most homes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFirmness feedback is mixed among users; some may perceive more spring than expected.\u003c\/li\u003e\n\u003cli\u003eUsers sensitive to coil feel may notice a slight responsive sensation compared with all-foam models.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMattress size\u003c\/td\u003e\n\u003ctd\u003eFull, 54 x 75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e12 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eGel memory foam + individually wrapped pocket coils (hybrid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmness\u003c\/td\u003e\n\u003ctd\u003eMedium-firm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCertiPUR-US certified foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBox springs, slats, platforms, adjustable frames\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety\u003c\/td\u003e\n\u003ctd\u003eFiberglass-free materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Full Size 12 Inch Hybrid Mattress is a sensible choice for sleepers who want a balanced medium-firm feel, reliable motion isolation, and straightforward setup at a value-oriented price. It is especially appealing to couples and mixed-position sleepers who need a supportive surface with some pressure relief, though those who require an extreme firmness or complete absence of coil feedback should consider alternatives.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHow long does it take to expand?\u003c\/strong\u003e\u003cbr\u003eThe mattress expands within hours after unpacking, though it may reach full shape over 24 to 48 hours.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the foam safe?\u003c\/strong\u003e\u003cbr\u003eYes, the memory foam is CertiPUR-US certified and the product is constructed without fiberglass.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be used on an adjustable frame?\u003c\/strong\u003e\u003cbr\u003eYes, it is compatible with adjustable frames as well as box springs, slats, and platforms.\u003c\/p\u003e","brand":"FSNSTSM","offers":[{"title":"Default Title","offer_id":48613495144667,"sku":"B0F1SJ7HMP","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91FWEBFdeQL._AC_SL1500_4b67808f-a5fd-4fcb-8c65-11f7b4a559af.jpg?v=1778755757","url":"https:\/\/gearmusthave.com\/products\/full-size-mattress-12-inch-hybrid-mattress-in-a-box-medium-firm","provider":"GearMustHave","version":"1.0","type":"link"}