Men's Classic Thermal Merino Base Layer 3/4 Bottom
- Free shipping on orders $150+
- Free pickup at our Arlington, TX store today
- Free 30-day returns
Description
Help keep your ski boots, hiking boots, and running shoes free of bulk and friction with our Men's Classic Thermal Merino Base Layer 3/4 Bottom. 100% responsibly sourced Merino wool provides ultimate breathability and comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric—perfect for your layering needs.
Features
About the brand
Smartwool brings the magic of merino wool to life — keeping you warm, dry, and comfortable no matter the season. From performance socks to base layers, every piece is designed for adventure. At Mountain Sports, we love Smartwool because it proves comfort and sustainability can go hand in hand, from trail to town.

Real people, always
Our storySomeone who's been there
Ask about a trail, a tent or a fit, and a person who uses the gear writes back.
Picked, not just stocked
We carry the brands we trust on our own weekends outside.
Easy if it's not right
Free 30-day returns, and help finding the one that is.
Free shipping over $150
Shipped nationwide since '96. Some exclusions apply.





























