A great camping and backpacking mattress at an incredible price. Lightweight polyester top with rugged nylon bottom. Premium quality open-cell foam core is comfortable and warm. High-Flow valve for quick inflation/deflation. Size: 20 in. x 72 in. x 1 in. Rolled Size: 20 in. x 4.5 in. Weight: 2 lbs. Fabric: Texturized polyester top/Nylon bottom.