Make the most of winter with the Smartwool Classic Thermal Merino Base Layer Crew for men. This dependable foundation for cold-weather adventures is crafted from 100% Merino wool that naturally manages moisture, regulates body temperature, and resists odors to keep you comfortable as conditions change. Its soft interlock knit delivers cozy warmth without sacrificing breathability, while a slim fit makes layering under midlayers and ski jackets easy. Thoughtful details, including flatlock seams and offset shoulder seams, help reduce chafing when you're carrying a pack or spending long days on the mountain. From resort skiing and snowboarding to winter hiking and backcountry exploration, this versatile base layer is ready to go wherever the season takes you.
100% Merino wool for natural temperature regulation, moisture management, and odor resistance
Soft interlock knit for comfortable next-to-skin wear
Flatlock seams and offset shoulder seams to help minimize chafing
Slim fit for streamlined layering beneath winter outerwear
Winter 2026/27 product
Smartwool Classic Thermal Merino Base Layer 1/4 Zip Top Boxed - Men's
