sono di parte lo ammetto. Stays put and sound quality is great. Ill exchange for size 13 and update. After having lost 100+ pounds my arms really show it. Gave only 4 stars as they could have been better lookin. If they would design it so the battery/controller was around the neck I would have loved them. Very soft leather and extremely comfortable. It has a little patch of velcro so you can stick it to the inside of the case and it keeps the little bag from getting lost. Do not waste your money or time with this shoe. There are 2 weight modules and 3 5-gram weights; one module has two slots and the other has 1.