ABRIPEDIC by Royal's Twin Size Mattress 10-Inches Memory foam Mattress 100% CertiPUR-US Foam - 25-Year Warranty 10" Thick with 3-inches of memory foam comfort layer and 7 inches of High density foam base Correctly aligns the spine and designed to give the unique comfort and Body support Removable and washable Soft Mattress cover included (zipper opening) Foam is CertiPUR-US certified, 25-year limited warranty Conveniently comprised and shipped to create a portable mattress for easy set up