Get ready to power through uphills & descents with the updated X ULTRA 4 GORE-TEX.It is as agile as a trail-running shoe but with all the stability, grip & 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.SPECIFICATIONS:-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.-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.FEATURES:-All Terrain Contagrip®, Advanced Chassis™, Active Support.-All Terrain Contagrip®:Our All Terrain Contagrip® is built for the widest variety of surfaces.It delivers durability & confidence on wet, dry, hard or loose surfaces.-Advanced Chassis™:Advanced Chassis™ is a molded insert embedded in the outsole.Providing strong lateral support and reassuring protection, it also delivers optimal mobility and flexibility.-Active Support:These mobile wings help hold the foot in place and accompany its movement, adapting to its shape and volume.