The Sanborn sertapedic mattress, features the pillow soft that promotes air flow through its unique, gently rippling design. The cool twist gel, gently conforms to your body to help provide pressure revealing comfort and promote airflow. The 2" support foam offers an extra deep layer of firm and supportive foam, gently cradles the body to help reduce pressure build up that can cause discomfort. 532 continuous dynamic innerspring system, features a custom head to toe design, with continuous rows of durable yet flexible coils aligned to provide proper support across the entire body. Also the best edge foam encasement provides a perfect edge support and help prevent sagging and edge roll off, tested beyond industry standards, to ensure durability, and long mattress life.