10" Twin XL Size Memory Foam Mattress 80" L x 38" W x 10" H 10" Twin XL sized memory foam mattress Consists of .3 memory foam into the cover, 1.7" cell memory foam, 8" pressure relief foam Eliminates pressure points in head shoulder, hip and feet areas Sink into our 10" Memory Foam Mattress. The top and side cover of this 10 Memory Foam mattress is constructed of a White Poly Jacquard Fabric. Quilted to the top is .3" of Memory Foam knitted into the cover, followed by 1.7" of memory foam, and then 8" thick of Pressure Relief Memory Foam that helps to eliminate pressure points you are experiencing specifically with this 3 important areas: head and shoulders, hips and feet for you to acquire harmonious sleep. The bottom includes an anti-slip cover that guarantees minimal injuries and mishaps you could possibly get with a non anti-slip cover. This 8 Memory Foam mattress provides substantial support, resiliency and helps eliminate heat that can sometimes be associated with Memory Foam Mattresses.