Listen pal, I don"t know you but if you are a "biggen"(and you know who you are) this tube is for you. It is more than a piece of rubber in a cardboard box - it is actually more like a magic carpet waiting to transport you to places you"ve only dreamed about. Okay, maybe not quite like that, but it will carry you wherever you"re willing to go (and it doesn"t use a drop of gas to do it). This Tube is made of real deal 100% Rubber and measures 45" when properly inflated. While this tube can be used for many things, one thing it cannot be used for is as a life saving device, sorry pal, fun only!!