TOUGH NYLON CONSTRUCTION! THIS DURABLE NYLON COVERED SNOW TUBE STAYS INFLATED WHILE OTHER CHEAPER TUBES RUPTURE. ATTACHED TO THE NYLON BODY IS A MOLDED BOTTOM SURFACE THAT IS SUPER SLICK AND VIRTUALLY INDESTRUCTIBLE. THIS TUBE IS FAST! THE TUBE FEATURES DOUBLE WEBBED FOAM HANDLES WITH KNUCKLE GUARDS AND A PULL ROPE CONNECTION POINT. 40" IN DIAMETER.