We bought each of our kids a Snow Tube a couple years ago. We live in MI, so they had plenty of opportunity to use them. They're great--They zip down the snow and ice, and can handle a good deal of weight. They have held up beautifully though a lot of sledding.
This was sent to Pennsylvania for my grandson's birthday, which was Christmas Day. They already had snow on the ground and were pelted with more the week after his birthday, as well as another snow storm the week after that. I have not heard anything negative; as long as the exterior is not punctured by hitting a large rock, which I pray does not happen, the tube should last long enough to enjoy in the creek this summer!