Open Cube Med. Discontinued aerodynamic

aerodynamic

A durable carbon black mixture

Using a hammer

Safe on anodised metal

Variable diamond pattern profile for maximum grip and shock absorption

Open Cube Med. Discontinued aerodynamicThe all new performance eyewear. Specifically designed with speed chasers and record breakers, road riders and triathletes in mind. The Koo Open3 (or 'Open Cube') are premium sunglasses from the maker of Kask helmets. With astonishingly clear optics and solid frames that stay where you put them, these are excellent shades. The most important aspect of any eyewear is the optical performance, so let's start there. The lens on the Koo Open Cubes is made