Gore Bike Wear Men's Base Layer Windstopper Shirt 100% POLYESTER, WINDSTOPPERMEMBRANE, STRETCH: 88% POLYPROPYLENE, 8% ELASTANE, 4% POLYAMIDE Imported For windy, cooler days; the material protects against wind-chill and ensures rapid moisture wicking Protects against the elements; WINDSTOPPER  windproof, water repellent, and with great breathability Tight fit; stretch WINDSTOPPER inserts on front, shoulders and kidney areas, thin soft fabric, comfy flatlock seams, long back Easy care, machine washable Contents: 1 mens short sleeve WINDSTOPPER Base Layer shirt This shirt is ideal for windy, cooler days. The combination of materials ensures rapid moisture wicking and protects against wind chill when riding. Tight fit Elastic WINDSTOPPER insert on front, over shoulders and on kidney area Thin and soft fabric Minimized seams for less chafing Flat-lock seams