Lowa Men's Ranger GTX HI Trekking Boot 100% Leather Vibram sole Classic Gore-Tex one piece trekking boot for carrying moderate loads over on-trail terrain Lowa Control System features a moisture management system to keep feet dry that helps eliminate blisters and hot spots C4 Tongue is antomically-contoured for a natural flex that cradles the foot in comfort and provides a faster break-in time X-Lacing uses our patent pending tongue stud allows for better pressure distribution across the tongue and Full length (5 mm heel, 3 mm forefoot) nylon shank, SPS (Supination-Pronation System) is key to providing support for hikers who will be walking long distances and carrying mid to large pack