I bought one of those last week after seeing a similar one on the forum. In the past, I wasn't able to walk for excercise because it really aggrivated my right shoulder. As soon as I saw it posted, I went out shopping and bought one. I got mine at a medical supply place for $15. I immediately tried it out and was very pleased. I have been walking every day now, which has really improved my mood! It is a little embarrassing, though....I have considered wearing it to bed, as I have the same problem. I don't think I could sleep in it.