Harley-Davidson Motorcycles Bar & Shield Bandana Cap/Biker Hat 80% polyester Adjustable ties to fit most men, women and teens (One size fits all) High quality 20% cotton, 80% polyester; Machine washable. Great design that offers a high level of comfort and style. Place the head wrap on head with ties in the back; Smooth down back flap and ensure ties are on top. Comfortable to wear under hats, helmets or alone.