Lowa - Hunter GTX Extreme (Sepia) - Men's: A hunting and trekking boot made especially for cold temperatures. 2.5mm hydrophobic nubuck leather upper. High insulation and durable waterproof protection. Lining is a combination of GORE-TEX and Thinsulate. Vibram "Tsavo" sole with SPS system for stability and comfort. "C4" tongue system and AWP help control and optimize foot movement for the most comfort.