Lightweight, fully cushioned Helion training and racing shoes. 18 adaptive Cloud elements and Helion superfoam combine with redesigned Speedboard to turn impact into acceleration. The curved heel area is synonymous with increased support, durability and comfort. Strategically placed webbing and a new lacing configuration allow feet to move freely and securely with added support to reach high-speed targets. The mesh upper made with Swiss technology is ready for the pace of the race. Lightweight and reinforced for added support when your feet get tired. Zoned ventilation for intelligent airflow. An elastic strap keeps the laces in place, and a new rubber compound in an advanced traction pattern offers superior grip on wet asphalt. The second generation of the podium-topping, record-breaking shoes beloved by elite athletes. Now enhanced with new elements and upgraded with Helion superfoam for the smoothest runs, smoothest landings and most explosive takeoffs. More comfort, more energy, more speed.