These sweatpants are way too stretchy in the waist and fit slightly looser than the sizing chart would have you believe. I bought the XL 40" which can stretch out to a 46/48"+. I'd advise getting a drawstring clip, as the waist string is looped, making it a little difficult to tie it off. The material is also a little thicker than I'd like in a sweatpant/ workout pant, but it's not uncomfortable. One good thing I noticed was that the inseam was a little shorter than I'd anticipated, so they fell around my ankles in the usual fashion. These pants are suitable for lounging around the house on laundry day, which is where I'll be relegating them. :)