Bigger, faster, VO2 S 100 PRO M. The innovative VO2-S single-sided frame gives a clear view of the 100-mm wheels of these performance-oriented X-Training skates. This new technology improves shock-absorption by 15-20%, while ensuring a smooth and sleek ride at top speed. The popular VO2 shaft stands for ideal power transmission and stability, while the integrated Vortech ventilation system keeps the feet cool and dry during sustained sessions. The VO2 S 100 PRO M is the perfect skate for ambitious athletes in a speed rush.