Our OPTI-STUD VIBRAM outsole provides reassuring grip and security underfoot on the trails. The breathable GORE-TEX lining keeps your feet dry and comfortable while you stride out. These boots are 100% synthetic, built without any animal-based materials. An Ortholite footbed provides additional cushioning and comfort. Berghaus’s unique OPTI-STUD VIBRAM outsole delivers outstanding grip, even on rough terrain. They are ready to help you explore the trails in great comfort, and at length. Engineered for all-season hiking, using the right technology and components to strike the perfect balance of performance and weight. At mid-ankle height, it provides the ideal level of support and security for long days on the hill. Waterproof and breathable protection comes in the form of a GORE-TEX lining and the OPTI-STUD VIBRAM outsole provides great grip underfoot at all times. Comfort and performance - a great fit combines with high-performance materials and technologies to keep you moving along the trail in great comfort at all times. Waterproof protection - the breathable Gore-Tex lining keeps your feet dry and comfortable while you stride out. 100% synthetic - built without any animal-based materials. An Ortholite footbed provides additional cushioning and comfort. Berghaus’s unique Opti-Stud Vibram outsole delivers outstanding grip, even on rough terrain. The boot is built on a specific hiking last. Upper - 100% polyester. Upper overlay - 50% PU, 50% TPU. Upper underlay - 60% PU, 40% Terylene. Internal lining - 100% polyester, 100% PU foam. Gore-Tex membrane - Gore-Tex Extended Comfort membrane, 100% nylon/membrane: 100% EPTFE with backing fabric nylon knit. Footbed - Ortholite - ball and heel pad (95% polyurethane, 5% recycled rubber). Midsole - EVA. Midsole heel pod - EVA. Internal shank - 100% TPU. Outsole - Vibram XS Trek Evo rubber.