Balaclava Swiss Cotton Ski Mask Ultra Thin Material One Size Fits Most Sm/Med Range Balaclava Swiss Cotton Hood Ski Mask Ultra Thin Material Made of ultra thin black 100% stretchy cotton material. Medium Unisex - Fits Men, Women, Teens and Children. Perfect for wearing underneath motorcycle helmets with little discomfort. Also great for skiing, snowboarding, sledding and many more cold outdoors events!