Mountain Bike Shirt - MTB 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 Mountain Bike Shirt, Mountain Bike T Shirts, MTB Shirt MTB Shirt, MTB T Shirts, MTB Graphic Tee, mtb Clothing Lightweight, Classic fit, Double-needle sleeve and bottom hem