The VO2 S 100 BOA is the latest addition to the K2 collection and is aimed at x-trainers who are looking for a higher performance model than a fitness category skate. Featuring an innovative design and a single-sided machined extruded aluminium VO2 S frame, this skate is designed for the larger wheels of x-training skates. It features four 100mm wheels with premium ILQ-9 classicPlus bearings for a smooth, high-speed workout. In addition to the comfort of the original SoftBoot®, it features the integrated Vortech ventilation system, a three-part system that keeps feet cool and dry during intense workouts by channeling air through the base, sole and shaft. Finally, this skate has a Boa lacing system and a VO2 cuff for added support.