Recommended for: Trail running and fast hiking on technical terrain in changeable & wet conditions. This distance-focused model is designed for longer runs and speed hiking when ankle support is needed. Built on the same midsole/outsole package as the low-cut FORTUX, it features a cushioned quarter-cut cuff, a durable jacquard weave upper that&';s lined with GORE-TEXA(R) Invisible Fit for featherweight waterproof/breathable protection that&';s been specifically developed for running shoes. Made on a women&';s-specific last. SIZE NOTE: ATR women&';s models run large. Consider sizing down a half size. Product Specifications Upper Fabric, Synthetic Lining GORE-TEX Insole ATR Midsole Rocker-Shaped High Rebound DYNEVA Outsole LOWA Weight 320g / Single Shoe Heel Drop 6mm Stack Height Heel 31.5mm, Ball 25.5mm Country of Origin Vietnam Other No intentionally added PFAS Features & Benefits Upper Technology FLEXIBLE We build our boots with varying degrees of flexibility depending on intended use. VEGAN FRIENDLY No known animal products used in footwear construction. LIGHTER WEIGHT Optimized to reduce weight while working to maintain highest performance. Underfoot Technology LOWA RUBBER OUTSOLE Rubber outsole with proprietary tread designs specific for intended use. WOMAN LAST Our women&';s models are made on women&';s-specific lasts to ensure a perfect fit.