This waist trimmer was nothing like other waist trimmers I've purchased. No bunching, no squeezing, and breathable when sweating. It does run small as mentioned and advised when buying. Wore for 30 mins with light work around the house (post partum) and the sweat it generated made me feel that flat tummy pregnancy was working it's way back! I also wore my "Strong mind strong body" tube socks during delivery for extra motivation to get me through a natural and unmedicated delivery. Talk about motivation!