Chevrolet Red Blazer K5 K5 4x4 GMC Long Sleeve T-Shirt Unisex Sizing 100% cotton- except ash 99/1 & safety 50/50. 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.