This vest shapewear provides an immediate chest, stomach & waist slimming look, specifically designed to reduce the appearance of gynecomastia or “man boobs” in men, helps get your self-esteem back. The slimming shirts front abdomen part is 2-layer design, provides double high compressions on tummy, visually losing belly fat and flattening stomach, makes you look thinner and cool. It's super-strong elastic, can expedite blood circulation and fat burning while exercise, strongly shaping chest, waist, and stomach, enhance back support, improve posture, combined with a good diet to build a healthy slim figure.