The Smartwool Men's Thermal Merino Base Layer Colorblock Crew in Charcoal Heather-Black combines warmth with sleek style. Crafted from 100% Merino wool, this base layer offers excellent insulation, moisture management, and odor control, perfect for outdoor activities in cold weather. The colorblock design features a blend of charcoal heather and black, creating a modern, versatile look. With a snug yet comfortable fit, this crew is ideal for layering, ensuring you stay warm and dry while enjoying the outdoors.