When every gram counts and speed is king. The Redster C9 Carbon is the absolute top model of the classic Atomic range - worn and loved by athletes when competing on the World Cup circuit. The C9 Carbon is the lightest classic Atomic shoe ever, yet still exceptionally strong and ideal for runners of all levels: amateur, club or pro. At the heart of the boot is the new Carbon Power Base; a carbon outsole created from a single piece of carbon. Handcrafted in Altenmarkt, this carbon outsole is incredibly light and flexible for a powerful, responsive kick. The innovative A-Frame lacing system completely wraps your foot for a perfect fit. And while you run, the Atomic Air Control system helps you regulate the temperature and keep your feet cool and dry, thanks to a breathable water-repellent membrane that combines Ripstop and Surfstretch materials. The ultimate racing machine!