I am 5' 1". I weigh 157 pounds. My waist is 37" and my thighs are 42". I'm usually in between a size medium and large. I purchased these camo pants in a size medium. Its a great fit. However, I am highly disappointed with the lack of quality with the buttons these pants come with. As soon as I opened the package one of the buttons came right off. I returned them and received a second replacement. As soon as I put them on, for the first time, two buttons completely broke off. The buttons are very cheap, fragile, and not good at all. And these pants are not cheap, as far as price point. Very unhappy about the button issue. But I cant do anything about it now. Other then spend more money to get all the buttons replaced. I was pleased with the staff at ByEgreis with helping me with the first return. But again really disappointed with the buttons.