I have a love hate relationship with this thing because it does an amazing job at shaping your waist, but theres been times Ive had to take it off due to it being uncomfortable. I ordered a Medium and theres a lot of different notches where you can tighten or I tighten. Still, this thing can suffocate you if you aren't careful. Its defientely trial and error to find the notch that is most comfortable for you. Another thing is that If Im wearing it at my desk where I am sitting or leaning over a lot, its gotta come off. The edges really dig into my skin. But on days where Im up and going, standing, walking, etc. i don't have any issues with it digging. Im 53 135lbs and fairly small. I wear this a lot when Im wearing high waisted pants over body suits, which are both pretty skin fitting pieces of clothing. Even still, you can never tell I have this on underneath, so its really unnoticeable.