Smartwool Men's Classic Thermal Merino Base Layer Colorblock Crew

Our Men’s Classic Thermal Merino Base Layer Colorblock Crew features 100% Merino wool made with a flatlock seam construction and offset shoulder and side seams designed for enhanced comfort, breathability, thermoregulation, and odor resistance. From hiking to running and skiing, this base layer brings consistent comfort, plus reliable warmth and durability, for every winter activity.