Always be ahead of your time and benefit from improved performance thanks to innovative technologies with the X-SOCKS® RUN SPEED TWO. The socks of the X-BIONIC® 4.0 generation are perfectly suited to medium and long distance courses thanks to their ventilation and protection functions optimally combined.
The instep protector with elongated AirCool Stripes protects the rear of the foot and simultaneously preserves the instep from pressure and friction.
The complete damping system also includes the high performance AirFlow ankle protector and the Lambertz-Nicholson 4.0 Achilles tendon protector optimized above the heel.