SMARTWOOL MEN’S MERINO BASELAYER 1/4 ZIP

The Men’s Classic Thermal Merino Base Layer 1/4 Zip is a refined essential built for warmth, comfort, and performance in cold conditions. As one of the warmest base layers in the Smartwool lineup, it’s made from 100% responsibly sourced Merino wool that naturally regulates temperature, manages moisture, and resists odor, keeping you dry and comfortable during any cold-weather activity.

The slim fit follows the contours of your body for easy layering, while flatlock seams and offset shoulder panels reduce chafing under packs or outer layers. The interlock knit construction adds durability and softness, and a 10" (25 cm) center-front zipper provides easy ventilation when you need to cool down.

Perfect for skiing, hiking, or everyday winter wear, this base layer delivers reliable warmth and comfort whether you’re on the mountain or on the move.

Features:

• Slim fit designed to follow the body’s natural shape

• 100% Merino wool with interlock knit for superior warmth and breathability

• Naturally moisture-wicking, temperature-regulating, and odor-resistant

• Flatlock seams and offset shoulders minimize rubbing and discomfort

• Side seams wrap forward for a more ergonomic fit

• Center-front zipper (size M): 10" (25 cm)

Fabric: 100% Merino Wool

Warm, breathable, and built to move with you, the Men’s Classic Thermal Merino Base Layer 1/4 Zip is your trusted companion for layering up on cold adventures.