There were in the gym these baths for CXWorx getting away, and I could not vote in spite place, I ordered this tube. After a few uses, it turns out, however as not as robust as I had initially thought. We can already see clear signs of use, but no cracks. The difficulty level is realistic given as extra heavy. There are currently the best tubes in terms of the price-performance ratio. Also the gym she uses, where it occurs again and again in older bands that they tear. But so far no one has happened something.