Bolle Vortex Sunglasses, Green Edge Frame, Brown Emerald Lens B-clear technology features ultra-lightweight trivex lens material, dual-sided hydrophobic/oleophobic coatings Carboglas Coating gives an armor shell from scratches and abrasions Optics Control System is an interchangeable lens System that allows you to swap out the lenses for different lighting conditions B88 frames are made of the finest grade Nylon for incredibly lightweight, durable, flexible frames Adjustable nose pads to tailor a custom fit, hypoallergenic and comfortable Anti-Fog and Non-Polarized Competitor Sunglass B-Clear Lens with clarity similar to glass but more impact resistant/lighter than polycarbonate Oleo phobic/hydrophobic lens treatment repels dirt, grease and water spots High-strength Thermogrip rubber temple and nose pads Offers 100-percent UVA and UVB protection