The 4ft small double Ezeeflex luxury Coolmax is supremely comfortable 250mm memeory foam mattress. It compromises of 70mm of visco elastic memory foam & 170mm of Reflex core which is high density foam. It provides a perfect mould to your body contour evenly distributing your body weight. This in return reduces the pressure around the hips & shoulders while keeping your spinal column correctly aligned. This small double mattress has a washable removable Coolmax Hypo-Allergenic cover for a dry cool & comfortable sleep night after night.