A fast-flying ball can cause lifelong damage to any athlete caught in its track. Our Chest Shirt protects your vital organs from commotio cordis, helping eliminate doubt and boost confidence when stakes are high. Infused with proprietary PolyShield(TM) technology, this lightweight and durable shirt sits comfortably over the sternum to dissipate up to 90% of impact resulting from blunt force trauma to the chest. Features Helps significantly reduce the risk of chest, sternum and heart injuries caused by commotio cordis and other high-speed impacts Breathable, flexible material molds to the body to enhance performance Machine-washable, long-lasting and weather-resistant Can easily be worn underneath any jersey or uniform 90% Polyester, 10% Spandex PolyShields(TM) Care Instructions: Care is easy. Just toss it in the washer on cold, then let it air dry. DO NOT BLEACH OR MACHINE DRY. Failure to follow these instructions may result in deterioration of the garment. Warranty will be voided if these instructions are not followed.