The Smartwool Mens Classic Thermal Merino Base Layer 1/4 Zip keeps you comfortable and dry during any outdoor adventure. Crafted from 100% merino wool, this slim-fit base layer delivers superior warmth, breathability, and odor resistance ‚Äì essential for dynamic activities. Moisture-wicking technology pulls perspiration away from your skin, while the interlock knit regulates temperature to prevent overheating.

Wear it for a brisk morning hike, under your ski jacket on the slopes, or layered for cool evening campfires. The half-zip pullover design makes it easy to vent excess heat, while the high collar locks in warmth. With its soft, next-to-skin feel and versatile styling, this merino layer is an outdoor essential you'll reach for again and again.

Material: 100% merino wool for warmth and odor resistance
Design: Shoulder panels eliminate top seams to reduce chafing
Fit: Slim cut tailored for active pursuits
Technology: Interlock knit promotes airflow and thermoregulation
Performance: Moisture-wicking to keep you dry
Versatility: Can be worn as a base or outer layer