For durability, the Gel Chin Strap is constructed with polycarbonate, a high impact-resistant plastic for maximum performance * The cup is lined with Gel to reduce slip, add comfort and eliminates the need for a chin sleeve * Adjustable nylon straps for comfort and fit * Patent Pending * All Gel chin straps come with the HH-11 Adams exclusive patented high impact plastic buckles; Patent #6,481,066