For more speed, safety and comfort, you benefit from innovations from 20 years of experience. With the X-Socks Ski Control 4.0, whether you're a competitive athlete or an ambitious amateur skier, you'll gain that crucial millisecond advantage. High-tech yarns and integrated patented technologies effectively protect the foot from the shin to the toes, while the new Suppronation footbed provides firm support, corrects misalignments and thus reduces the risk of injury. The innovative HelixCoil system surrounds your fibula as a concentric double spiral and has a muscle-stabilising effect. The ISO blocker also reduces pressure on the foot at certain points. But the foot is not only well protected. It also stays dry and warm, as moisture evaporates quickly via the microfibres of the breathable Mythlan yarn and the thermoactive Xitanit fibre ensures a constant feel-good temperature.