The GT-XPRESS™ 2 shoe is designed for higher mileage training and durability. Featuring a mesh upper construction to improve breathability and keep feet cool, this shoe also incorporates synthetic overlays to improve support. Equipped with GUIDANCE LINE™ technology to help deliver a smoother stride, GEL™ technology cushioning in the rearfoot of the midsole creates better shock absorption during the landing phase of your stride. Lastly, the GT-XPRESS™ 2 running shoe implements AHAR™ technology helps reduce wear in high-contact areas of the outsole. GUIDANCE LINE™ technology improves gait efficiencyGEL™ technology cushioningAHAR™ outsole improves durability