This is a strong shoulder supporter made by Daiya Industry, the type that came before the bonbone series. I purchased it from an orthopedic hospital to protect my left shoulder, which is prone to dislocation, while practicing judo, but I am selling it because I don't use it. It's a sports supporter with a very strong hold. I haven't used it much and have washed it every time, but it is quite an old used item, so please refrain from purchasing if you are concerned.