The product does not appear to be sized properly. It was very difficult to figure out how to put it on. Possibly because there were no instructions or because it did not fit properly. It is uncomfortable because of the sizing. I have worn it for 2 evenings and I can notice that it helps to keep my shoulders in a better position. I probably would not order this product again. I have a weight issue around my upper waist (shaped like a apple), and this product would probably better serve a smaller person.