Get ready to bounce with Air Floor! Endorsed by Olympic athletes, the Air Floor was rightly called a more "positive rebound surface than a traditional spring floor" by recovery guru Bill Sands. The Air Floor is designed for athletes to train harder while minimizing the risk of injury. The product is made of a high-quality vinyl that provides maximum peeling, tearing and wearing strengths, making it a professional gymnastic quality mat. It is recommended to use the mat on top of a spring floor, tumbling strip, carpet foam or panel mats and is not intended for use on hard surfaces. The unit comes with a hand pump for easy inflation. For faster inflation, electric pumps are recommended and can be purchased separately. Material - Premium knife-coated vinyl. Available sizes - approx 5' wide x 10' long x 3" high, approx 5' wide x 15' long x 3" high, approx 5' wide x 20' long x 3" high. Weight - 5' x 10'x 3" weighs 37lbs, 5' x 15' x 3" weighs 50lbs, 5' x 20' x 3" weighs 67 lb