Why only two stars because i buy this a few months ago and now its already broken I was having ergonomic issues using an XTRFY M4 and a vertical mouse for work. my one foot is still swollen, so I ordered a wide size. You can adjust the filling to suit your needs, and the seller is EXTREMELY helpful in ensuring you have enough. The instruction doesn?t even give justice. The tops are still in great shape, but the soles showed wear after just a couple months and now both slippers have significant holes through the first layer. Garufi biked across America, and did it on his own terms, his own way, which really spoke to me. I wish they could be lighter for my workouts. But with the nut lock it is solid. no more having to shave everyday.