The Women's Rock DFS Mid uses AKU's exclusive Dual Fit System (“DFS”) to give you both maximum comfort during your approach and a high performance fit while climbing and scrambling. The Rock DFS Mid has two separate lace zones that utilize lightweight webbing that wraps around and under your foot which enables you to customize your fit. The Rock DFS midsole incorporates a lightweight EVA foam for cushioning and a polyurethane heel for durability and support. Together with a GORE-TEX breathable upper lining and a Vibram Approach sole with Megagrip, the resulting Rock DFS Mid GTX offers a high-performance approach shoe for all day comfort.