Sleep Master 8-Inch Cloud Memory Foam Mattress, Twin 1" microfiber quilted to soft knitted jacquard cover, 1" memory foam, 1" Viscolatex Responsive Foam, 1.5" comfort foam, & 3.5" high-density base support foam Memory foam is infused with green tea, charcoal and natural plant oil which minimizes the use of petrol based chemical oils and works to eliminate orders Our patented compression technology allows our mattresses to be efficiently compressed, rolled and shipped in a box conveniently to your door via Fedex All foam is CertiPUR-US Certified for durability, performance and content with 10-year limited warranty We recommend you open your mattress package within 72 hours of receipt and allow 48 hours for your new mattress to return to its original, plush shape