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Classic All-Season Merino Base Layer Bottom - Men's
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Lightweight Classic All-Season Merino Base Layer Bottom delivers breathable warmth for year-round adventures
What Our Gearhead® Experts Are Saying:
"These baselayer bottoms are my go-to for ski tours and shoulder-season hikes. They’re light enough that I don’t overheat, but the merino still keeps me warm when I’m resting. The flatlock seams make them comfortable under shells, and I love that they don’t stink after a couple of days out."
We count on the Smartwool Classic All-Season Merino Base Layer Bottom when days in the mountains call for lightweight warmth and reliable comfort. The blend of merino wool and nylon offers the best of both worlds: soft, natural insulation that wicks moisture and resists odor, plus the durability to keep up with rugged use.
The athletic fit layers smoothly under shells and midlayers, while flatlock seams prevent chafing on high-output climbs. A merino-lined elastic waistband stays comfortable all day, whether we’re breaking trail in deep snow, setting up camp, or hiking through cool shoulder seasons. Lightweight, breathable, and versatile, these bottoms earn their spot in our year-round kit.
Details
- Lightweight baselayer pant provides active-friendly warmth
- Merino wool and nylon blend is insulating and breathable
- A slimmer, athletic fit sits comfortably under layers
- Merino-lined, elastic waistband for a secure and comfy fit
- Flatlock seams lay smooth on the skin to prevent chafing
- Natural properties of merino wool help prevent odor build-up
- Item #SWLZ8YA
- Material
- 88% merino wool, 12% nylon
- Insulation Weight
- lightweight
- Fit
- athletic
- Style
- tights
- Anti-Odor
- natural attribute of merino wool
- Activity
- skiing, snowboarding, mountaineering, hiking, snowshoeing, winter camping
- Manufacturer Warranty
- 2 years

Go Far. Feel Good.
Smartwool makes comfortable, capable Merino wool socks and apparel to add comfort and confident to any adventure.
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