The Rudy Project Rydon in Black Matte Frame colour with Impactx Photochromic black lens is our best selling sunglass. The lens is a total photochromic lens which means it changes colour from complete clear to a dark lens tint when activated by light and UV light. These lenses are perfect for many sports and are considered world class cycling sunglasses as well as many other sports such as running sunglasses and golf sunglasses. Totally adjustable nose and temple end tips are included in our Rydon sports sunglasses which can make it the perfect fit. The Rydon lenses are anti-fogging The Rydon has been a best seller for Rudy Project for 18 years and still will be selling for another 100 years it's that good. Therefore support down the track for spare parts, lenses and RX will not be a problem.