But for some reason this time they make my feet stink real bad. Broke immediately and I barely touched it Four stars due to some missing frequencies and less than high volume. Surprised to find this boot very difficult to get on, I guess being that they are so much shorter and narrower. This rack was super easy to put together and it is very sturdy. shopping at amazon is great until there is an issue Then its NOT! I feel I have been ripped off by the seller and am extremely disappointed. I feel great in them! CHARGINGThese do not take long at all to charge. This Treblab speaker is awesome!