XC4 Extreme Comfort System breathable, lightweight with great flexibility and waterproof
TRUFOAM rocker sole and Axis Chassis system that propels you forward and cushions each step
Moisture wicking textile lining with temperature regulating Smart Degree Technology so your feet are the perfect temperature all day long
Removable memory foam insole with contoured arch support and dual width removable footbed that you can easily take out to accommodate a custom orthotic or wider foot
