This shirt not only looks cool, but 20% of the proceeds of this shirt will be donated to support fallen fire fighters. We will be making donations to the National Fallen Fire Fighters Foundation (www.firehero.org). Please help us support those who help us and get a cool shirt while showing your support. This shirt is made with 60% cotton and 40% polyester. This high quality fiber holds it's shape and gives you a nice sporty look.