Ideal upgrade suited for long distance training and performance * Patented lo-balance aluminum frame increases stability and control * Superior carbon/anatomic boot provides the best control available for the extended frames 12" to size 10.5 and 12.8" above * The most popular performance wheel sizes 3x100mm and 1x90mm HP paired with SG9 speed bearings with race axles * Cuff and instep strap with speed lace lower and Five Star liner reward the user with great support adjustment and all day comfort