About This Pressure-Relieving Breathability - The advanced technology of this memory foam twin mattress maximizes ventilation while features a medium-firm feel that cradles your body to offer superior pressure relief and optimal support. Cooler Sleep Experience - This twin mattress features cooling gel and advanced breathability that whisks away excess heat and moisture, keeping you comfortably cool throughout the night. No More Nighttime Overheating - The soft, breathable mattress cover of this twin mattress promotes continuous air circulation to maintain your ideal sleeping temperature for uninterrupted rest. Certified Safe Materials - Constructed with CertiPUR-US certified premium foam and wrapped in OEKO-TEX STANDARD 100 certified cover. This gel memory foam twin size mattress is rigorously tested to meet the highest standards of skin-friendliness and sleep quality. Convenient Mattress in a Box - This 39"x75" twin mattress arrives in compressed packaging for easy handling. Simply unbox and watch it expand - ready for immediate use (allow 24-72 hours for full expansion to specified dimensions). Overview Brand : Marsail Size : Twin Latest version Product Dimensions : 75"L x 39"W x 8"Th Top Style : Gel Top Cover Material : Polyester Blend Number of Layers : 5 Fill Material : Gel Memory Foam Special Feature : Breathable, Fire Retardant, Pressure Relief, Removable Cover Color : White Model Name : MSMAT8W2-US Item Firmness Description Medium Firm : Construction Type Gel Foam, Memory Foam : Item Firmness Description Medium Firm : Construction Type Gel Foam, Memory Foam