Bolle Women's Kassia Sunglasses, Shiny Black Frame, True Neutral Smoke Lens Extensive curvature provides for the widest field of vision as well as optimum protections for the eye area Light yet offer good shock resistance Eliminates glare from water or road surfaces ensuring purity of vision With a visible light transmission of 10%, they are ideal for sunny conditions 8 base. Improves awareness and offers good periphery vision Anti-Fog and Polarized Sport Sunglass Polycarbonate Lenses made from premium grade resin, 20 x more impact resistant than glass, 3 x lighter Oleophobic/hydrophobic lens treatment repels dirt, grease and water spots Frames made from the finest B88 Nylon - exceedingly strong, yet lightweight and flexible Offers 100-percent UVA and UVB protection