What is a “special woman” design? For us, it’s a shoe that’s fully adapted to your body shape: a more flexible collar, a shape that hugs the contours of your foot and a lower density ADV-C Chassis for added stability. This mid-rise version of the X ULTRA™ 4 with GORE-TEX combines all of this with waterproof protection and an adhesive outsole that performs as well up and down, so you can enjoy absolute freedom.