{"product_id":"queen-mattress-in-a-box-12-in-medium-firm-mattress-cool-gel-comfort","title":"Queen Mattress in a Box 12 in Medium-Firm Mattress - Cool Gel Comfort","description":"\u003cp\u003eOur review of the Queen Mattress in a Box sums it up simply: this 12 in medium-firm memory foam mattress is best for sleepers who want balanced support with cooling and safe materials. The single biggest reason to consider it is the combination of a medium-firm feel that supports most body types and the gel-infused foam that helps manage heat, making it a reliable everyday mattress for adults and older children. The cover is a mostly cotton blend and the construction avoids fiberglass, which adds peace of mind for health-conscious buyers.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium-Firm Feel:\u003c\/strong\u003e The mattress strikes a 6-7 out of 10 firmness range, offering supportive alignment for back and combination sleepers while still relieving pressure points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGel-Infused Memory Foam:\u003c\/strong\u003e Gel infusion helps dissipate heat so the foam continues to conform without trapping as much warmth as traditional memory foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e92% Cotton Cover:\u003c\/strong\u003e A natural-feel rib fabric surface provides breathable comfort and a soft hand against the skin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass-Free Flame Layer:\u003c\/strong\u003e The inner cover uses a safe FR solution without fiberglass, reducing the risk of skin or respiratory irritation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertiPUR-US Certified Foam:\u003c\/strong\u003e All foam is produced to CertiPUR-US standards, meaning fewer ozone-depleting chemicals and minimal off-gassing when unpacked.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis mattress is a strong choice for people who prefer a medium-firm surface that supports spinal alignment while still offering contouring comfort, including adults, teens and use in platform beds or daybeds. The gel infusion suits sleepers who tend to run slightly warm and want a memory foam feel without excessive heat retention.\u003c\/p\u003e\n\u003cp\u003eBuyers who need an ultra-soft pillow-top feel, an innerspring bounce, or precise luxury layers may want to look elsewhere. Also, shoppers requiring exact mattress length for custom frames should confirm dimensions, since some customers reported small size variation compared with expectations.\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 works for multiple sleep positions.\u003c\/li\u003e\n\u003cli\u003eCooling gel in the foam improves temperature control compared with basic memory foam.\u003c\/li\u003e\n\u003cli\u003eHigh cotton content cover and fiberglass-free flame layer are safer and gentler for sensitive sleepers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome buyers find the firmness a bit too firm, so sleepers who prefer soft surfaces should test first.\u003c\/li\u003e\n\u003cli\u003eA few reviews noted minor size variance, so double-check fit for bunk or custom frames.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMLILY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eQueen\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\u003eCover Material\u003c\/td\u003e\n\u003ctd\u003e92% Cotton, 8% Polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoam Features\u003c\/td\u003e\n\u003ctd\u003eGel-infused memory foam, CertiPUR-US certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlame Retardant Layer\u003c\/td\u003e\n\u003ctd\u003eFiberglass-free inner cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Queen 12 in medium-firm mattress is a smart value pick for shoppers seeking balanced support, pressure relief and improved cooling without fiberglass or strong off-gassing. It is especially appropriate for platform beds, daybeds and sleepers who want a dependable, everyday foam mattress that prioritizes safe materials and temperature control.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this mattress sleep cool?\u003c\/strong\u003e\u003cbr\u003eThe gel-infused memory foam helps dissipate heat, so it sleeps cooler than traditional memory foam though not as cool as some hybrid models with coils.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the cover safe for sensitive sleepers?\u003c\/strong\u003e\u003cbr\u003eYes, the rib fabric cover is 92% cotton and the inner flame layer is fiberglass-free, reducing irritation risks often associated with some flame-retardant materials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit a platform bed?\u003c\/strong\u003e\u003cbr\u003eThe mattress is designed for platform beds and daybeds, but verify your frame dimensions since some buyers reported small discrepancies in fit.\u003c\/p\u003e","brand":"MLILY","offers":[{"title":"Default Title","offer_id":48612543234267,"sku":"B0D91VYH55","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81BXAy8FSYL._AC_SL1500_89a0253e-3cf4-4ae3-b75e-1c757a793bb9.jpg?v=1778426225","url":"https:\/\/gearmusthave.com\/products\/queen-mattress-in-a-box-12-in-medium-firm-mattress-cool-gel-comfort","provider":"GearMustHave","version":"1.0","type":"link"}