Temperature senstitive, at low temperature it is harder (more viscous) and high temperature it is soft and bounce ( more elastic).Thersfore it is known as VISCO-ASTIC Foam."Appears to remember" just for few seconds, the shape of last objects placed upon its surface.Made from the finest materials to provide unique comfort and support to users. Specifications Treated Knitted Fabric Quilted 30 mm Memory Foam Pillow top stitching Euro top stitching 10 mm PU foam side quilting Artistic quilt designing.