Harken Navigator Sunglasses Feature: Brown Glass lenses Nylon Grilamid Frames are tough, flexible, chemically-resistant to sunscreens, and hyper-allergenic. Polarized lenses block 100% UVA, UVB, UVC rays, assorb 99.9% reflective glare. Distortion - Free Borosilicate glass Distortion - Free injection molded impact resistant polycarbonate lenses Hydrophobic Lense Coating: Repels water, resists waterspots and eases cleaning Exterior flash mirror coating reduces reflection and glare Anti Scratch Coating protects optical clarity Interior anti-reflective coating eliminates reflections and enhances optical acuity