The MTN Trainer Mid GTX is a lightweight men's alpine trekking boot with a robustsuede leather and fabric upper plus waterproof and breathable GORE-TEX protection. Designed to provide extra flexibility and increased comfort on both ascents and descents during alpine trekking in mixed and technical terrain, the MTN Trainer Mid GTX has a midsole with dual-density Bilight TPU Technology which is ergonomically shaped to cradle your foot and provide all-day comfort on longer hikes. At the ankle, the Flex Collar allows natural movement and adaptability during descents for extended comfort, even when carrying a heavy pack. Underfoot, the lightweight, compact Vibram WTC sole delivers solid yet forgiving walkability. And SALEWA's 3F System provides flexibility, support and a blister-free fit from day one. In addition, the GORE-TEX Performance Comfort lining delivers optimized weather protection and climate comfort, and a cushioning OrthoLite footbed wicks away moisture, helping to keep your feet cool.