Ford Mustang 50 Years Mach 1 T-Shirt Unisex Sizing. Design is heavily distressed. 100% cotton- except ash 99/1 & safety 50/50, Cotton Candy Pink is Port Authority. Machine wash cold, tumble dry low. Design will appear smaller on larger size shirts. Available in cotton t-shirts and long sleeves.-Gildan brand. Occasionally Port Authority & Jerzees is substituted.