MTB Shirt - Mountain Bike 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 MTB T Shirts, mtb shirt, bike clothing, mtb clothing Cycling shirts, mountain bike shirts, mtb gift idea bicycle shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem