•Our most-advanced XC4® yet!
•Exclusive breathable, waterproof, construction and materials.
•Axis Chassis™ System offers optimal support and stability.
•Smart Degree Technology™ temperature-regulating interior polymers activate at both hot and cold temperatures, so your feet feel just-right all day.
•XC Foam™ delivers superior cushioning, lightweight comfort.
•Dual-width footbed can be easily removed to accommodate your own orthotic or wide foot.
•Removable multi-density footbed with memory-foam cushioning and arch support.