Flammi 2-Pack Unisex Adult Multi-Purpose Sports Balaclava Full Face Neck Masks Under Helmet for Cycling Riding UV Protection (Black + Black) MESH FABRIC: Made of 100% polyester. Durable; wrinkle free; soft & comfortable; machine washable; seams on sides to avoid irritation of face. FUNCTION: UV protection; sweat absorbing; breathable & quick drying 360 PROTECTION: Protect your head, face, ears, neck from sun, wind, dust, cold. Extra long neck allows balaclava to tuck under your shirt or jacket to keep you protected from wind & dust. FASHION DESIGN: Offers you multiple wearing styles, as picture shows. Great for running, fishing, cycling, motorbiking, trekking, hunting, skiing, tactical training, and other outdoor activities. ONE SIZE: High elastic face mask, one size fits most adults