Leward Mens Slimming Body Shaper Vest Waist Muscle Shirt Undershirt Designed to slim and shape bodies whilst worn Can be worn when exercising or relaxing Comfortable to wear all day and everyday Invisible under clothing,The ultimate body shaping undergarment for men. Creates a lean appearance & build abdominal muscle. Made of high quality Nylon to stay elasticity and shape of body, which is different from many similar design of cheap material on the market, pls recognise it before you choose