Xelero X-GPS WR Running Shoe (Men) - BlackThe Xelero X GPS WR provides unparalleled support and functionality. The enhanced Xelero technology incorporates a Guidance Propulsion System with Aqua Max water resistant membrane lining that keeps the foot dry inclement conditions. The knit upper with molded overlay adds support and durability to tackle the most challenging environments. The Propulsion element cradles the rear foot and extends forward to guide the foot into a neutral position