These are really great- My Dad got frostbite on his feet during Battle of the Bulge. I have limited space in my little work area, so I want to push my desk as close to the wall as possible. Durch die flexible Einstellung halten die Kopfhörer zuverlässig auf den Ohren. I really wish slippers were designed with either no heel or a full heel. and not forgetting the best price I could find anywhere for these on the internet) It makes aiming easy and dodging jumping spiders and watching them fall off a cliff as a result is really satisfying. The battery life is not that great. If your feet are wet they might slip ever so slightly while wearing them, however they dry out very well and nothing warps as a result of the water. I do want to also say that no where in the box were any instructions on how to use the machine. If and when he comes out with a new book, you had better watch out because I intend to be the first person in line to purchase a copy of his latest work.