Shimano's New Twinspark Sunglasses are purpose-built for the demands of road, mountain, trail, city, and focusing the design around requirements of cycling. Riders can select the best choice depending on the riding conditions. Shimano lenses feature polycarbonate substrates for superior impact resistance, reduced weight and performance in a wide range of temperatures. All lenses are also de-cantered for optical clarity and feature both hydrophobic and anti-scratch coatings to outer and inner lens surfaces to increase water-repellency and durability.