Marine Corps Kicking Ass Since 1775 USMC T-Shirt Design is distressed. Don't want kick ass in design,email me. Unisex Sizing. 100% cotton. Machine wash cold, tumble dry low. Design will appear smaller on larger size shirts. Available in cotton t-shirts & long sleeves-Gildan brand. Occasionally Port Authority & Jerzees is substituted. uv performance shirts & long shirts.