The Salewa Women's Alp Flow Mid GTX Hiking Boot boasts the most innovative features found in boots. Gore Tex's Surround midsole offers waterproofing superior to the competition, with a laminate that wraps around the entire boot. Unlike most waterproof boots, Gore Tex Surround includes a specially perforated footbed to provide true breathability underfoot, resulting in an entirely comfortable hike whether you're trekking in hot, muggy weather or cold, wet weather. Salewa paired Gore Tex's Surround with Gore Tex's Extended Comfort for even more waterproof breathable protection. The Alp Flow also features Salewa's 3F System Evo for a surprising amount of flexibility and mobility in a supportive mid cuff boot. Ballistic mesh makes the upper very breathable and durable, and Salewa added nubuck leather reinforcements and a 360 degree rubber rand for rock protection. Climbing style laces give a snug fit from toe to foot. Vibram's Hike Apparoach sole gives the grip, flex, and durability that's ideal for the most demanding excursions.