Size Notice: In order to achieve the effect of body shaping, slimming shirts are not the same size as regular shirts. Please choose the size that suits you according to our size chart. Our undershirts are made from the highest quality, and most comfortable Nylon and Spandex available. When wearing our compression shirts, ones upper chest and stomach regions will be flattened to reveal a slimming effect when wearing any type of clothing. This is a perfectly fitted soft mens slimming compression undershirt that stretches and recoils as your body moves. Providing back support to promote better posture, flattening your chest and abdomen. It can be worn underneath any kind of clothing, such as shirts, t-shirts, sweaters, coats and formal dress shirts. The slimming compression tank is a secret of good body shape. Get your confidence back! FEATURES 1. Generates more sweat with physical activity and increase body temperature but avoids overheating, maximizes fitness routines. 2. Reduce your belly size and enhanced pressure on the belly, which makes a nicer look for your body. 3. After workout, it will help you get well by controlling blood flow and preventing being swollen. 4. Deodorization function. Deodorization function do not leave us unpleasant smell behind from sweat and dust. 5. It can be worn all day long for leisure, exercise or business occasion because of the comfortable and durable material. Our shirts are made using a strong weave of Nylon & Spandex, which make it feel tight, yet breathable and comfortable for all day wear. They are great for wearing underneath work out clothing as well, as they breathe so well.