Mountain Bike American Flag Shirt - MTB USA Flag 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 American Flag Mountain Bike Shirt, MTB US Flag T Shirt United States Mountain Bike, USA MTB, Cyling, Bike, Bicycle Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem