When the temperature drops and adventure calls, the Smartwool Classic Thermal Merino Base Layer Crew delivers the performance you need to stay comfortable mile after mile. Crafted from 100% ZQ Merino wool, this men's thermal base layer naturally wicks moisture, regulates body temperature, and resists odors even during multi-day backcountry trips. The slim-fitting design hugs your body's contours for optimal layering while flatlock seam construction with offset placement eliminates chafing during high-output activities like skiing, climbing, or winter hiking. Whether you're skinning up a mountain or grinding through a long bike ride in freezing conditions, this merino wool base layer keeps you dry, warm, and focused on the trail ahead instead of what you're wearing underneath.
Features
Natural moisture wicking and odor resistance for extended wear
Temperature regulation adapts to changing conditions
Flatlock seam construction prevents chafing during movement
Shoulder panels eliminate top seams for backpack comfort
