It's Time For Hiking T Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Great for anyone who loves to backpack, hike, mountain climb or camp. everyone that you are out there really living in the outdoors! Lightweight, Classic fit, Double-needle sleeve and bottom hem