This is really uncomfortable at first. When it came in I was really excited to try it but once I put it on it was extremely uncomfortable. I then read the instructions that came with it and they do tell you that it WILL be uncomfortable at first. You start out wearing it a couple of hours a day each day and work your tolerance up to a full day. I fully believe that this will be an amazing product that does exactly what it says because I do notice a difference when I have it on. I do recommend this product for anyone that needs a product like this. Once you are used to it the corrector is actually very comfortable and padded very well so it does not dig into your shoulders!