Bridgeport Mill eating Steel Tee 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 That famous image of the living mill eating it's way thorough the work on top quality apparel from The Unknown Cat Officially Licensed by The Unknown Cat Lightweight, Classic fit, Double-needle sleeve and bottom hem