Overcome every obstacle and enjoy the ease of running with the X-SOCKS® RUN DISCOVERY. The patented high-tech features of the X-BIONIC 4.0 generation create ideal conditions to run smoother, sprint faster, and reach the finish line relaxed. The fit is perfectly tailored to the feet and promotes well-being in all conditions. The breathable 3D knitting of the instep protector with AirVent Zone optimizes the climatic conditions on the upper foot. The perfected Air-Conditioning Channel® 4.0 also promotes ventilation by pumping fresh air toward the sole with every step. The extensively redesigned Lambertz-Nicholson Achilles tendon protector 4.0 now even better protects the foot from friction, pressure, and impacts thanks to reinforced padding zones.