Sizes 8,10,10.5,11 and 11.5 only. The VO2 Max 90 is K2’s entry into the X-Training category, but there is nothing entry-level about these skates. Designed with the Vortech Ventilation System, this skate uses an intricate pattern of vents, channels, and exhaust to minimize moisture in the skate and liner, keeping the overall weight of the skate supremely light. A longer VO2.2 frame delivers maximum power transfer, and the VO2 cuff is sculpted to deliver support where you need it without the excess weight. Ifthat’s not enough, K2’s Speed Lacing will have you in and out of your skates in a flash, while 90mm wheels and ILQ-9 bearings create a fast and smooth roll.Features:•K2 X-Training Inline Skate•The Original K2 Softboot = best fit on the market!•Heat moldable Ultralon-Liner•90mm/83a wheels, ILQ 9 Classic Plus bearings•Frame: V02.2•Cuff: V02•Lacing system: K2 Speed LacingSoftbootIn 1994, K2 revolutionized the skate industry by introducing the first-ever Softboot inline skate. In 2013, the Softboot design is still the foundation of K2’s collection. Many companies have followed K2’s direction, and today, K2’s Original Softboot Technology still remains the design standard by which all other manufacturers measure themselves. Soft boot!V02 CuffAll the functional properties of the Stability Cuff with the addition of a stiff rear insert creating the most supportive cuff in the K2 line. Soft boot!VO2.2 Aluminum FrameIn order to get the most out of the big-wheeled set-ups that K2's X-Training skates feature, we designed the VO2 Aluminum for fast and powerful skating. This lightweight design creates maximum power transfer while remaining stable at speed. Soft boot!