Smartwool Men's Classic Thermal Merino Base Layer Colorblock Crew

100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance

• COLD WEATHER BASE LAYER. Our crew features 100% responsibly sourced Merino wool made with an interlock knit, shoulder panels and a flatlock seam construction. This base layer brings comfort, reliable warmth and durability, to winter adventures.
• SLIM FIT. Designed to meet the demands of outdoor adventuring, this slim fit crewneck shows off a slimming silhouette while offering unrestricted movement through the arms and chest.
• CLASSIC THERMAL MERINO. Ideal for cold-weather activities where warmth and breathability are crucial, this midweight fabric used a 100% Merino wool construction that helps move moisture away from skin to keep you warm and dry.
• WHY MERINO WOOL? Thinner and softer than regular wool, it's easy to wear next to skin. Each fiber transports sweat away as a vapor, cancels out odors (we tested it ourselves) and regulates body temperature to keep you cool in summer and warm in winter.
• FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — interlock knitting enhances breathability, thermoregulation and odor resistance while flatlock seams minimize chafing for greater comfort.