McDavid Hex Tank Shirt - Men's Protective but not bulky, the McDavid Hex™ Tank Shirt is the ideal performance piece for under your uniform. It uses 9mm Hex technology to perfectly position polyurethane pads over the ribs and spine, absorbing impact in those crucial areas. Armhole binding provides a comfortable fit that doesn't stretch out after a few games. The Hex Tank Shirt is made with hDc™ moisture management for quicker sweat evaporation and six-thread, flat seams for strength without irritation. 80% nylon/20% spandex. Imported.