The bands are quite ok. A bit small (ie very thinner extent) Unfortunately the Velcro does not go back through the loop and again, so that the pressure only partly congested on the hook, but the hook is just more and thus must bear the whole weight with. With 60kg of Velcro are there already on times. Not good for my block, not good for my leg muscles, not good for sleeping children who suddenly by the noise in the bed! As I said, I use them, but it would probably not buy me back.