Smartwool Classic Thermal Merino Baselayer Bottom - Women's
4.7 rating (3 reviews)Soft, warm, and never itchy, the Smartwool Classic Thermal Merino Baselayer Bottom uses 100% merino wool in a midweight 250gm build for dependable cold-weather layering under hike, climb, camp, and snow-day kits.
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Product details
Soft, warm, and never itchy, the Smartwool Classic Thermal Merino Baselayer Bottom uses 100% merino wool in a midweight 250gm build for dependable cold-weather layering under hike, climb, camp, and snow-day kits.
Cold-Weather Merino Comfort
The Smartwool Classic Thermal Merino Baselayer Bottom brings soft, non-itchy warmth to cold-weather days outside. Its 100% merino wool build helps keep comfort high whether you’re hiking, climbing, camping, or layering for snow days.
- Soft 100% merino wool feels comfortable next to skin
- Midweight 250gm insulation supports cold-weather layering
- Slim fit layers cleanly under outdoor pants
Fit & Layering
A close-to-body slim fit helps these bottoms sit smoothly beneath climbing pants, hiking pants, or insulated outerwear. The midweight construction adds warmth without unnecessary bulk.
- Designed as a women’s baselayer bottom
- Low-profile fit for layering
- Useful for climb, hike, camp, and winter travel setups
Material Benefits
Merino wool is valued for its natural softness, warmth, and everyday versatility in changing conditions. These bottoms are built for repeat wear across cold trail days, belay sessions, and nights around camp.
- Naturally comfortable wool fabric
- Warmth suited to colder temperatures
- Available in multiple heathered and solid colors
Color & Size Options
Choose from available colors including Black, Charcoal Heather, Mink Heather, and Twilight Blue Heather. Size availability may vary by color, with options ranging from XS to XL.
- Colors: Black, Charcoal Heather, Mink Heather, Twilight Blue Heather
- Sizes: XS, S, M, L, XL, depending on color
- Price: $125
Tech specs
- Brand
- Smartwool
- Product Name
- Classic Thermal Merino Baselayer Bottom - Women's
- Material
- 100% merino wool
- Insulation Weight
- Midweight, 250gm
- Fit
- Slim
- Category
- Women’s baselayer bottoms
- Available Colors
- Black, Charcoal Heather, Mink Heather, Twilight Blue Heather
- Available Sizes
- XS, S, M, L, XL
Care and maintenance
Follow the garment care label for washing and drying. Close zippers and fasteners before washing to help preserve fabrics and finishes.
Shipping and returns
Free shipping for orders over $70. Unused gear can be returned within 30 days.
Questions and answers
How warm are these baselayer bottoms?
This is a midweight 250gm merino baselayer bottom, making it a strong choice for cold-weather hiking, climbing, skiing, camping, and everyday winter layering.
Can I wear them under other pants?
Yes. The slim fit is designed to sit close to the body so it layers smoothly under climbing pants, snow pants, or hiking shells without extra bulk.
Are they itchy?
They are made with 100% merino wool, which is known for a soft feel and natural comfort next to skin.
What sizes are available?
Available sizes vary by color, with options including XS, S, M, L, and XL depending on current inventory.
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