TYR's Nest Pro Nano Goggles sport a unique design and a compact fit for smaller faces. Inspired by Beijing's main stadium for the 2008 Olympics, the nest-like structure provides additional rigidity to minimize distortion and optimize the fit. A large, soft, one-piece Thermo Plastic Rubber frame and gasket comfortably seal out water and feature an over-molded nose bridge. The Cellulose Propionate lenses provide wide peripheral viewing, anti-fog properties and UV protection. And, the Double Varied Tensile Strength silicone head strap provides a secure fit and is easy to adjust.