Be demanding when choosing your sports equipment and ensure maximum comfort with the X-SOCKS® RUN SPEED TWO WOMEN for increased endurance in long and middle-distance running. With innovative, combined ventilation, stabilization, and protection features, these women’s socks shine particularly in longer running distances. Compared to their predecessors, the X-BIONIC 4.0 generation models are equipped with even more patented technologies within the dense fabric. Among these innovative features is the newly developed Air-Conditioning Channel® 4.0 for ventilating the footbed. The instep protector with extended Air Cool Stripes ensures the climate regulation of the top of the foot and protects the instep from pressure and friction. The powerful AirFlow Ankle Pads 2.0 at the ankle and the Lambertz-Nicholson Achilles tendon protector 4.0 above the heel complete the comprehensive cushioning system.