Cold-weather comfort starts with Smartwool's Classic Thermal Merino Base Layer Crew for men. Delivering the warmth and comfort you need to stay outside longer, this midweight base layer naturally regulates body temperature, manages moisture, and resists odors to keep you comfortable through changing conditions. The soft interlock knit feels great against the skin, while a slim fit layers easily beneath your favorite midlayer or ski jacket. Flatlock seams and offset shoulder seams help minimize chafing and improve comfort when you're on the move. Whether you're skiing, snowboarding, hiking, climbing, or exploring snowy trails, this versatile essential provides dependable performance for cold-weather adventures.
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 easy layering and a close-to-body feel
Winter 2026/27 product
Smartwool Classic Thermal Merino Base Layer Crew Boxed - Men's
