The Silentnight Memory Foam Mattress is a member of Silentnight's brand new Select Collection, designed to offer the world-class support you'd expect from Silentnight. The layer of memory foam is designed to provide the comfiest sleep possible (mattress comes roll packed). Memory foam layer reduces pressure on joints to help relieve minor aches and pains.High density Miratex foam supports you to the very edge of the mattress with no roll off. Absorbs movement from both you and your partner so you do not roll together. This mattress has a 3 layer system: Layer 1: Comfort layer, Soft touch quilted knit cover for extra comfort and luxury. Layer 2: Response layer, Memory foam layer responds to body heat and moulds to body contours for the ultimate in comfort. Layer 3: Support layer, High density posturised Miratex foam core for support where your body needs it most.This product is heavy and care must be taken when lifting.