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Alpine Onset 150 Merino Wool Blend Base Layer Pants

Outdoor Research

Current Price $99.00
Color: Black Heather
Size
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Details & care

Stay warm on your next adventure in these odor-resistant, moisture-wicking base-layer pants made from a non-mulesed merino-wool blend.

  • 30" inseam; 10" leg opening
  • Elastic waist
  • Moisture-wicking fabric engineered for dryness and comfort
  • Merino wool naturally resists odors and helps regulate body temperature for comfort
  • UPF 30+ sun protection
  • 53% merino wool, 42% polyester, 5% elastane
  • Machine wash, line dry
  • Imported
  • Item #11076551
Helpful info:

Size info

  • XS=0-2, S=4-6, M=8-10, L=12, XL=14-16, XXL=18.
  • Get the fit you want. Book an appointment with our onsite experts or stop by your nearest store.

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Reviews

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Emichi
Reposted from outdoorresearch.com
Mar 4, 2026
Best base layers
Excellent base layers for all kinds of conditions. They run a bit big but they still fit. Soft versatile material.
RicTicBee
Reposted from outdoorresearch.com
Verified purchase
Dec 2, 2024
Great as pajamas!
Purchased the top and bottoms and LOVE them. Use them as pajamas and they're great for travel and multiple wears without getting stinky.
kefar110
Reposted from outdoorresearch.com
Nov 17, 2024
Perfect merino base layer
Extra comfy and warm merino base layer! The waist band is nice and holds the pants in place. The ankles have a seam so they are tight fitting. Really comfortable and run pretty true to size. I’m 5’6, 135 lbs and have a medium. Recommended!

Outfit Ideas For This Item

Alpine Onset 150 Merino Wool Blend Base Layer Pants
Outdoor Research
Current Price $99.00