FEATURES of the Scarpa Women's Triolet Pro GTX Boot Semi-automatic crampon-compatible Tri-Flex ankle for natural articulation and support Excellent shock-absorption with molded PU heel insert Performance Comfort Gore-Tex to keep your feet dry SPECIFICATIONS of the Scarpa Women's Triolet Pro GTX Boot Upper: 2.8 mm Suede Pro HS12 Perwanger Lining: Gore-Tex - Performance Comfort Insole: Pro-Fiber Midsole: PU/EVA Sole: Vibram Mulaz Last: FT Weight: 1/2 pair: 1 lb 8 oz / 690 g