I was really hopeful for this product.  I had researched them for weeks/months prior to the birth of my 4th child.  I decided this one seemed like it was th ebest so I ordered it. I went with the sz large.  I'm 5'6 and prior to getting pregnant I was 145 pounds -- at the end I weighed 196 pounds.  I bought the large and was not able to fit in it on day 2 but by day 3 I was able to pull it on. It was a little hard to pull up but it was expected. I thought the clips at the bottom were very helpful for going to the bathroom. I think it gave me some decent back support but everytime I wore it I bled more than when I didn't wear it. I also had issues with it rolling down (it did not go all the way up to my bra).  By the 2nd week I was down to 170lbs and needing a medium.  I didn't order a medium since I wasn't happy with the rolling down and the fact it showed under every shirt.  Oh, and my large ripped within the first week of use...the company did fix that but the issue was still that it ripped. I didn't feel like it was worth the money.