I measured at (waist) 28.5in and (hips) 39in so I was right between small and medium- I sized up (as recommended in other reviews) and glad I did. I am using as a stage 3 faja, week 5 post-op 360 lipo with BBL and even though there was a little pushing/pulling, I got it to fit snug with a little foam on my lower back, lower abdomen, and full abdomen so the snaps weren’t touching my skin. Crotch DOES have zipper (yay!) It is enough to do all of your business through without having to remove the faja. No flap under the zipper, so I recommend you stay shaved and zip/unzip slowly to avoid snagging sensitive genital skin on that zipper. I attach a paper clip to the end of the zipper so I don’t have too much difficulty opening/closing the zipper myself. Personally, I think the shoulder straps could be a little longer- otherwise this is exactly what I was looking for. Probably as comfortable as you can get for a high compression faja.