*** Pre-Loved Good Condition*** Vionic lightest midsole yet, this nitrogen infused midsole offers the highest rebound to enhance your walking motion Water Repellent: Treated with a water repellent coating to repel water on contact Vionic's Vio-Flex footbed is a flexible, lightweight compound offering optimal moisture control including a perforated heel for added breathabil Featuring a lightweight midsole rebound technology to enhance your walking motion, this sneaker goes the distance. Designed with exclusive alignment technology to balance the whole you.