Deluxe air mattress features a tri-layer inflation system for maximum support and protection against pressure ulcers. More than 240 uninterrupted, self-adjusting flotation cells and chambers constantly equalize pressure across the entire body and help prevent heat build-up. Durable 21-gauge vinyl is double-sealed to help prevent air loss. Special emergency safety valve holds air in, yet lets you deflate mattress quickly when needed. Four heavy-duty corner straps hold mattress securely to the bed. Compatible with most air pumps. Weighs 10 pounds before filling with air.