This 1″ high-density, open-celled visco elastic foam molds itself to your body and helps to support and cushion body dynamic. Responds to body temperature and reduces pressure on body points for improved blood circulation and comfort during the night. The high elasticity in this foam makes this item a leading and quality foam topper compared to other generic foam toppers. For correct fit you must provide bed width and length when ordering. For round, odd-shaped, and specialty beds call Quality Time direct to order at 1-800-345-0438. Cover not included.