*Contour wrap nosebridge has been engineered at a 25-degree angle to reduce friction resistance. Three interchangable size nose pieces. *Double VTS (Varied Tensile Strength) silicone headstrap conforms to side of head while flat back straps allow for secure fit. *Optical-grade polycarbonate lenses are low-profile and provide wide-angle race viewing. Lenses are anti-fog and UV protected. Single-edge Thermoplastic Rubber (TPR) gaskets are attached along the inner lens edge to reduce resistance and not obstruct vision.