Gore Running Wear Men's Pulse Ws Shirt, Black/White, Small 100% POLYESTER, WINDSTOPPERMEMBRANE,INSERT:92% NYLON,8% ELASTANE,; Do not bleach. Do not tumble dry. Do not iron. Do not dryclean. WINDSTOPPER Product Pushpull construction; Stretch inserts for optimum freedom of movement; Sleeve hem with thumbhole Front zip with semi-lock slider CHN