I had to return this, However,
I do not want to give it a bad review, because if it fits you better than it fit me, I can imagine that it would work very well! The size I bought fit me perfectly, except pulled too tight under the front of the armpit area. The couple of times I wore it, it gave me great support and everything about it was comfortable, except under the front area of my armpits. It really made it hurt even after only wearing for 20 minutes. However, even after wearing for only two days, it did help my shoulder pain! So, If it fits you differently than it fits me, you may have better luck with it. I wish they made it that had straps attached that pull the armpit straps forward, as I see is available on different  product, which I’m going to be trying.  Obviously, I cannot wear something that helps one pain, but causes a different pain! I see in many reviews that this front of armpit issue is a very common complaint on all of these types of posture correctors. I hope that the companies that make these will be paying attention to reviews and change their products accordingly!
Rating: 4 stars