Rudy Project Performance Sunglasses and sports eyewear for cycling, running, triathlon, mountain biking, golf, and more offer protection from the sun's UV radiation and elements with patented lens technology and comfortable, customizable, and non-slip fitting frame designs. The wide range of proprietary Impact X photochromic lenses that change tint to match ambient lighting conditions and RP Optics polycarbonate lenses provides an unparalleled number of choices to match any conditions. Power Flow ventilation frame and lens designs balance the need for eye protection with enhanced ventilation to provide cooling inside the lens and prevent fogging, even during high output activities. Quick swap technology allows the user to change lenses easily and conveniently to match lighting conditions or replace damaged lenses. This modular approach along with accessorizing color lens bumpers and non-slip rubber kits, allows users to create fully custom color combinations of frame, lens, and rubber color kits for a totally personalized look of sunglasses like Cutline, Defender, and Tralyx+.