100% Merino Wool Cold Weather Base Layer Bottoms
Keep warm and comfortable in our 100% Merino Wool Cold Weather Base Layer Bottom. Use as a base layer while skiing, trail hiking, or simply under your everyday clothes to keep warm in cold climates. Our fabric offers breathability, moisture wicking, odor-resistant and temperature regulation. Pair with our 100% Merino Wool Cold Weather Crew or Quarter Zip for additional warmth.
DETAILS
- Made from 100% merino wool
- Merino wool is 100% biodegradable, renewable, wrinkle-resistant, UV-resistant, and naturally breathable
- Medium 240g weight designed for cold weather
- Moisture-wicking, odor-resistant, and temperature-regulating
- Flat lock seams to minimize chafing
- Produced in BSCI (Business Social Compliance Initiative) certified factories, which aim to improve working conditions throughout the supply chain
- Made with care in Dongtai, China
SIZE & FIT
- Inseam: 30"
- Model is 5'11" and wearing a size medium in black
- Model is 6'3" and wearing a size medium in heather charcoal grey and heather teal
CARE
Machine wash in cold water on gentle cycle with like colors. Do not bleach. Dry flat. Iron on cool setting as needed.
ALL YOUR QUESTIONS, ANSWERED
Are these a good choice for men’s cold‑weather underwear and base layering?
Are these a good choice for men’s cold‑weather underwear and base layering?
Base layer bottoms use 100% merino wool in a medium 240g weight with moisture-wicking, odor-resistant, and temperature-regulating properties for cold conditions. The design works under ski gear, on trail hikes, or beneath everyday clothes.
What are the key specs of these merino base layer bottoms (fabric, weight, inseam)?
What are the key specs of these merino base layer bottoms (fabric, weight, inseam)?
Bottoms are made from 100% merino wool, use a medium 240g weight designed for cold weather, and have a 30" inseam. Each detail is built for reliable layering in low temps.
Do the seams help reduce chafing during long wear?
Do the seams help reduce chafing during long wear?
Flat lock seams are used to minimize chafing, offering a smoother feel against the skin. This construction pairs with naturally breathable merino for all-day comfort.
Which fabric is best for men’s underwear — modal vs cotton vs microfiber — and where do these fit?
Which fabric is best for men’s underwear — modal vs cotton vs microfiber — and where do these fit?
For cold-weather underwear, these bottoms use 100% merino wool with breathable, moisture-wicking, odor-resistant, and temperature-regulating performance. Modal, cotton, and microfiber are common options, and merino is a natural-fiber choice when you want warmth-focused layering.
How is this product made with social-compliance considerations?
How is this product made with social-compliance considerations?
The factory participates in the amfori BSCI program, which audits workplace social-compliance practices. These merino bottoms are thoughtfully made with that oversight in place.
What other categories should I shop with 100% Merino Wool Cold Weather Base Layer Bottoms?
What other categories should I shop with 100% Merino Wool Cold Weather Base Layer Bottoms?
Explore our Men's Cotton Underwear, Socks for Men, Men's Underwear, Women's Quarter Socks, Men's Ankle Socks, Men's Crew Socks, Men's No Show Socks, Women's Over-The-Calf Socks and Men's Boxers collections.