Julbo Airflux Snow Goggles Ultra Venting Superflow Technology No Fogging LIFETIME WARRANTY: Julbo has devoted over 125 years building quality, performance products and stands behind them 100%. Julbo warranties all sunglasses and goggles for the original owner against manufacturing defects for the lifetime of the product. Spectron 4 Polycarbonate double lens designed for the brightest days, transmitting 5% of the visible light and providing 100% protection from UV A,B & C rays. Optical Grade 1 polycarbonate lens with internal Spectron 3 Polycarbonate double lens is designed for general purpose use, transmitting 13% of the visible light and providing 100% protection from UV A,B & C rays. Optical Grade 1 polycarbonate lens with internal antifog treatment. Spherical Double Lens with Anti-Fog Coating. Visible Light Transmission 5%. Anatomic Minimalist Frame design with built-in lens ventilation. Two layers of foam for optimum comfort and shock absorbtion. Full Silicone Strap for excellent non-binding grip and easy symmetrical adjustment