Adams USA PRO-25-4D 4-Point High Football Chin Strap with D-Rings All Pro chin straps come with the HH-11 Adams exclusive patented high impact plastic buckles; Patent #6,481,066 For durability, the Pro Chin Strap is constructed with polycarbonate, a high impact-resistant plastic for maximum performance The cup is lined with color coated vinyl for player comfort Adjustable nylon straps for comfort and fit