These undies fit like a dream! Perfect rise, flattering fit; no pinching, panty lines, or riding up. I ordered one pair to try, and after wearing them for a few hours, immediately ordered more. The fact that they're also eco-friendly/sustainable is awesome. I used to wear Pact but I'm a Knickey lady now. (For reference, I am 5'4", 125 lbs and ordered a size Small).