Get ready to power through uphills and descents with this wide-fit and mid-cut GORE-TEX version of the X-ULTRA 4. It is as agile as a trail-running shoe but with all the stability, grip and waterproof protection you need to tackle technical terrain. Equipped with a new chassis, the shoe is even better at protecting sensitive articulations without compromising freedom of movement. Trail-inspired agility Drawing on our trail-running expertise, this shoe is lighter and more agile, so you stay nimble on uneven terrain. Enhanced stability The new Advanced Chassis targets articulations on the outer foot to optimize stability without limiting your mobility, while the mid cut provides additional ankle support. All-terrain grip The All Terrain Contagrip outsole grabs the terrain, even when it’s wet or slippery, giving you more control especially on descents.