Keep your feet comfortable from the start of the trailhead to above treeline with the Darn Tough Men's Mountaineering Extra Cushion Micro Crew Socks. Merino wool regulates temperature to keep your feet cool in the heat at the start of your trek and warm once you reach an exposed peak. They also stay put in your boots so you don't get blisters and hot spots, and they're cushioned for comfort on rough, rocky terrain.