Open Cube Med. Wrenches Aluminium rivets

Aluminium rivets

BLE (Bluetooth Low-Energy)

Chamfered tips for a perfect fit

Zeiss Anti-Reflective TechnologyAn anti-reflective technology greatly improves the efficiency of the lenses

Chain tool

Open Cube Med. Wrenches Aluminium rivetsThe 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