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Lightweight Merino Baselayer Bottom - Women's

4 out of 5 stars
4 Reviews

Out of Stock

Don't worry though, we have a lot more Women's Baselayer Bottoms in stock than that.

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Why We Built The Backcountry Lightweight Merino Baselayer Bottom

For winter athletes who favor more fast-paced adventures and generate more of their own heat, we created the Backcountry Lightweight Merino Baselayer Bottom. We balanced the thermoregulating and odor-resistant performance of merino wool with the strength and moisture-wicking performance of nylon—and a touch of spandex for stretch where you want it—to handle grueling days in the backcountry with aplomb. This cardio-friendly fabric blend provides enhanced breathability, making them perfect for backcountry touring, pounding resort laps, or snowshoeing.


  • Lightweight merino baselayer for high-output winter pursuits
  • Merino wool blend is tough, odor-fighting, and moisture-wicking
  • Slim fit matches body movements and layers comfortably under pants
  • Full-length silhouette offers warmth for winter hikes and ski trips
  • Item #BCCZ2O2
84% merino wool, 12% nylon, 4% spandex
Insulation Weight
lightweight (180gsm)
natural attribute of merino wool
Claimed Weight
skiing, snowboarding, winter camping, snowshoeing, running
Manufacturer Warranty
limited lifetime

Overall Rating

4 based on 4 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 2 reviews

Fits Slightly Large

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

October 5, 2023

Just okay

I've used it several times
Size Bought:
5' 5"

These will do for now but overall disappointed. The size small was a little too long (I have other backcountry brand pants in both small and mediums) and so the pant comes up really high and bunches a little at the ankle. The seams are uncomfortable in the thigh/crotch area. And my main complaint is that at least the green color is very see through. When taking off my goretex shells, I am unable to walk around in these, even just around the car, because they are so see through. Not only could you see my underwear in the front and the back, but also very clearly my KT tape on my shins. They work okay but honestly I didn't notice a huge difference compared to the discomforts.

Savannah S
5 out of 5 stars

January 4, 2023

Good quality. Great price.

I've used it several times
Size Bought:
5' 5"

These were a gift for my wife and she loves them! Very comfortable, nice stitching that allows for comfortable winter fat biking and good weight for active pursuits.

aru101600713 a
5 out of 5 stars

December 20, 2022

great for tall women

Size Bought:

I'm 6ft tall and most long underwear is too short for me, these fit perfect. These are lightweight and easy to move it. We'll see how they hold up as I've only worn them once but so far they feel great.

Alexandria R
4 out of 5 stars

November 11, 2022

Good for the price, almost perfect

I've used it once or twice and have initial impressions
Size Bought:
5' 5"

I purchased these in the black color and so far I've enjoyed them. I really like how high waisted they are and the band at the waist. I haven't worn them long enough to know if they stretch out or not with wear but so far they're maintaining their shape and how fitted they are. It's slightly scratchier than my other merino wool leggings but it's not terrible and you can forget about it after a while. They're also slightly see through. I'm 5'5" and these bunch up at my ankles so they'd be good for taller girls.

May W