The Sealy Posturpedic Plus Series delivers superior all-over support, along with the comfort you need for relaxing sleep. It features durable knit fabric with spun yarns and moisture-wicking treatment for a soft and comfortable feel next to your body. The center zone is reinforced with exclusive gel memory foam to deliver the additional suport you need for your lower back and hips, as well as, durability. Each mattress features a 2.5 inch reinforced border around the mattress edge so you can use the full surface of the mattress.