describe: This men's compression vest is designed to reshape the male chest, waist and abdomen, reduce the appearance of gynecomastia, hide man boobs and potbelly, straighten the back and provide an instant slimming appearance. The slim fit of this shirt allows you to wear it under all types of clothing such as sweatshirts, T-shirts, sweaters and formal shirts. PREMIUM FABRIC: Our slim fit vest is made of spandex, durable, long-lasting elasticity, quick-drying, comfortable, breathable, and anti-allergenic; targets problem areas and provides strong compression to the abdomen. Instant Flat Belly Effect: This men's weight loss compression sweatshirt's unique tummy-strengthening feature gives you an instant tummy effect, while it also has a compression effect on the chest, hiding man's chest (\