NIKE Boy`s Pro Combat Hyperstrong Core 4-Pad Shirt Body/pad back: Dri-FIT 78% polyester/22% spandex. Pad top: 100% polyester. Pad: 60% rubber/40% polyethylene Fabric: Body/pad back: Dri-FIT 78% polyester/22% spandex. Pad top: 100% polyester. Pad: 60% rubber/40% polyethylene Strategically placed foam padding helps protect against impacts Compression fit provides locked-in support