ASG 19239 PROTECTIVE GLASSES PRODUCT DETAILS Stylish, ergonomic frame combined with slim polycarbonate lenses for the ultimate in protection and style. The newly designed ventilated nose piece is soft and adjustable, allowing heat to be dissipated from the nose bridge and reducing fogging. The top of the frame is ventilated so that air can circulate and fog up is prevented. Curved lens with 9.75 base provides excellent lateral protection against wind and particles in the air. Provides protection against excessive glare. Provides 99% protection against harmful UVA and UV-B rays.