This D.207508 mattress has a visco-elastic used on its top surface and a high-density HR material for the bottom surface. The visco-elastic is sensitive to weight and height so it provides exceptional comfort through surrounding the user. The strong HR material on the bottom surface gives users the healthy support they need from a mattress. This anti-decubitus mattress features air holes within the combination points so the accumulation of heat and moisture is prevented and users have a dry, comfortable surface to sleep on.