Mcdavid Hex Pad 6 Pad Sleeveless Body Shirt nylon HexPad Sleeveless body shirt pro style sleeveless compression shirt with Hexpads protecting the ribs, spine, chest, and shoulders Hexpad conforms to and stretches with your body for continuous protection Hydravent Moisture Management Technology enhances heat control, comfort, and performance 80%nylon/20% spandex, 5.5 oz. per square yard