{"product_id":"king-mattress-12-inch-king-size-hybrid-mattress-in-a-box-medium-firm","title":"King Mattress 12 Inch King Size Hybrid Mattress in a Box - Medium Firm","description":"\u003cp\u003eIn this review of the King Mattress 12 in king size hybrid mattress, the bottom line is simple: this bed is best for couples or back sleepers who want a balance of contouring memory foam and responsive pocket coil support. The mattress ships vacuum-packed and expands to 76 in x 80 in x 12 in, combining CertiPUR-US certified memory foam with individually wrapped pocket springs to deliver pressure relief, motion isolation and improved airflow. Setup is straightforward and the hybrid construction aims to reduce partner disturbance while maintaining a medium firm feel that supports spinal alignment.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid construction:\u003c\/strong\u003e Combines premium memory foam and individual pocket coils to provide both contouring comfort and responsive support for varied sleep positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium firm feel:\u003c\/strong\u003e Designed to relieve pressure while keeping the spine aligned, making it suitable for back sleepers and those who prefer some firmness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotion isolation:\u003c\/strong\u003e The memory foam layers and wrapped coils minimize motion transfer so partners are less likely to be disturbed by movement during the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature regulation:\u003c\/strong\u003e The hybrid design and coil layer promote airflow through the mattress to help dissipate heat compared with all-foam models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications and safety:\u003c\/strong\u003e Foam is CertiPUR-US and Oeko-Tex Standard 100 certified, indicating low emissions and material safety for the sleep environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy setup:\u003c\/strong\u003e Ships compressed in a box and expands at home; allow 48-72 hours for full expansion and follow the unboxing safety guidance to avoid rapid expansion impact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eCouples and light sleepers who value motion isolation and a balance between foam contouring and coil support will appreciate this mattress. The individually wrapped pocket springs combined with memory foam help reduce partner disturbance while providing the pressure relief many back and combination sleepers need.\u003c\/p\u003e\n\u003cp\u003eThose who prefer a very plush, pillow-top feel or require an ultra-firm surface for heavy bodyweight sleepers should look elsewhere; the medium firm profile aims for universal comfort rather than an extreme softness or rock-hard support. Also, buyers who need immediate full firmness should expect a 48-72 hour expansion period.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComfortable medium firm balance that supports spinal alignment without feeling overly stiff.\u003c\/li\u003e\n\u003cli\u003eGood motion isolation thanks to memory foam and individually wrapped coils, helpful for shared beds.\u003c\/li\u003e\n\u003cli\u003eCertiPUR-US and Oeko-Tex certifications provide reassurance about foam quality and emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires 48-72 hours to fully expand and off-gas; immediate use may feel different than the finished mattress.\u003c\/li\u003e\n\u003cli\u003eMay not suit sleepers who want a very plush pillow-top or an extremely firm platform-style mattress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eKing (76 in x 80 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\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\u003eMemory foam layers with individual 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, Oeko-Tex Standard 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrial \u0026amp; Warranty\u003c\/td\u003e\n\u003ctd\u003e365-night trial, 10-year support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe King Mattress 12 in hybrid is a well-rounded choice for couples and mixed-position sleepers who want pressure relief, motion isolation and breathable support at a sensible value. Its CertiPUR-US certified foam and pocket coil core deliver dependable comfort and the medium firm profile suits back sleepers and those who prefer moderate firmness. Allow time for expansion, and this mattress represents solid long-term value for a hybrid bed in a box.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the mattress take to fully expand?\u003c\/strong\u003e\u003cbr\u003eAllow 48-72 hours for the mattress to fully expand and reach its intended comfort and support levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this mattress safe for indoor air quality?\u003c\/strong\u003e\u003cbr\u003eYes, the foam layers are CertiPUR-US and Oeko-Tex certified, which indicates low emissions and tested material safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the mattress work on common bed frames?\u003c\/strong\u003e\u003cbr\u003eYes, it is designed to fit most frames including platforms, box springs and slatted beds, and can also be used on the floor.\u003c\/p\u003e","brand":"AGHODT","offers":[{"title":"Default Title","offer_id":48619645108443,"sku":"B0FKB6LQ4P","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81yJXnol8-L._AC_SL1500.jpg?v=1778483983","url":"https:\/\/gearmusthave.com\/products\/king-mattress-12-inch-king-size-hybrid-mattress-in-a-box-medium-firm","provider":"GearMustHave","version":"1.0","type":"link"}