This shaper vest firmly compresses your entire torso. It's made with our PowerSlim® fabric: double-layered at the bottom to compress abs and correct your posture, single-layered at the top to compress the chest. It has a perfect fit and offers the appearance of a toned silhouette under your clothes. Criss-cross PowerSlim® bands on the backside improve posture by pulling the shoulders back, which may relieve back pain.