This is a nice set of resistance bands that appear to be made to last.  These are much different and of better quality than the bands you'll find in certain stores.  The metal hooks work extremely well and you don't have to worry about them breaking in the middle of using them, and the handles also appear to be made for the long run. I've used these now for several workouts doing things like face pulls, wood chops, pallof presses and more, and they haven't seemed to lose their shape at all.