They see a smooth to the skin nylon spandex knit t-shirt with moisture wicking technology that keeps you dry and an SPF 50 rating for UV protection. But only you know that on the inside are powerful layers of powernet binding your chest, flattening your belly and pressing against your back in support. An effective shirt to Gynecomastia. Effective for tummy trimming. A girdle shirt for outerwear with an athletic look. A chest binder breakthrough! Made in the U.S.A.