★Good newest air-support design provides supportive balanced surface for optimal performance to keep you off the ground.Designed to fit under or inside your sleeping bag for increased warmth.Ergonomically designed hexagonal engineering，Limits airflow and heat loss。The surface of the cube is designed to adapt to the body's natural curves, providing comfortable support and optimal warmth during sleep. ★Two air valve design,Open the first valve, easy to inflate it with 10-15 breaths.If you don't want to blow with your mouth，you can use the"air bag"we offered，only 3-4 pushes can full inflated，Very convenient。Then Open the second valve ,instant deflation within one second when it's time to pack your gear,super convenience. ★40D high quality nylon with TPU coating , performance better than any other general pads in Waterproof, Air Tightness, Abrasion-resistant and Tear-resistant to ensure its comfortable, long-lasting, durable and easy to clean, woven polyester material reduces slipping and noises,perfect for hammocks and sleeping bags。