If you've ever had to cut a great day short because Junior got a bad case of the shivers, it's time to pick up the Smartwool Classic Thermal Merino Base Layer Bottoms. With a super soft and comfy next-to-skin feel, Merino 250 fabric offers breathable warmth for cold days on the mountain and is naturally moisture wicking and odor resistant. Primo warmth to keep the good times going.

100% Merino Wool – Made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance.

Fabric Weight | Mid 250 – Single layer for cold weather performance. Baselayer for very cold weather.

Slim Fit

Merino-Covered Elastic Waistband

Flatlock Seam Construction Designed to Eliminate Chafing

Interlock Knit