What does women-specific mean? For us, it’s shoe that is fully adapted to the morphology of your feet: a softer cuff, cradling anatomical design and a lower density ADV-C Chassis for greater stability. This version of the X-ULTRA 4 has a wider fit, mid cut and waterproof GORE-TEX membrane, all backed up by a grippy outsole that powers through uphills and descents, so you can explore every angle of your freedom.