Bolle Greta Sunglasses - TNS Lens Light yet offer good shock resistance With a visible light transmission of 10%, they are ideal for sunny environments 8 base. Offers better periphery vision Flash Mirror Coating Faithful color reproduction Non-Polarized Ladies Sunglass Polycarbonate Lenses made from premium grade resin, 20 x more impact resistant than glass, 3 x lighter TNS-True Neutral Smoke color lens Frames made from the finest B88 Nylon - exceedingly strong, yet lightweight and flexible Offers 100-percent UVA and UVB protection