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Women's 100% Merino Inversion Base Layer Shirt in Treetop
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Women's 100% Merino Inversion Base Layer Shirt in Bone Stripe
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a woman wearing an Inversion Base Layer Shirt in Bone Stripe with matching bottoms
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Women's 100% Merino Inversion Base Layer Shirt in Charcoal Heather/Bone
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a woman wearing an Inversion Merino Base Layer Shirt in Charcoal Heather/Bone
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Women's 100% Merino Inversion Base Layer Shirt in Black
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Women's 100% Merino Inversion Base Layer Shirt in Iceberg Green
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Women's 100% Merino Inversion Base Layer Shirt in Charcoal Heather
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a woman wearing an Inversion base layer shirt in black with matching bottoms
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a woman wearing an Inversion base layer shirt in black with matching bottoms
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a woman wearing an Inversion base layer shirt in black from the back
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a woman wearing an Inversion base layer shirt in Treetop with matching bottoms
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a woman wearing an Inversion base layer shirt in Treetop from the back
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a woman wearing an Inversion base layer shirt in Charcoal Heather/Bone
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a woman wearing an Inversion base layer shirt in Charcoal Heather/Bone from the back
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a woman wearing an Inversion base layer shirt in Bone Stripe with matching bottoms
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a woman wearing an Inversion base layer shirt in Bone Stripe from the back
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a woman wearing an Inversion base layer shirt in Iceberg Green with matching bottoms
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a woman wearing an Inversion base layer shirt in Iceberg Green with matching bottoms from the back
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closeup of the Inversion base layer shirt's sleeve in Bone Stripe
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a woman setting up her splitboard wearing an Inversion base layer shirt in black with a beanie and ski pants
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a woman splitboarding in an Inversion base layer shirt with a beanie and ski pants
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a woman shoveling snow in a 100% Merino Inversion base layer shirt and Ridge beanie
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Women's 100% Merino Inversion Base Layer Shirt in Treetop
Women's 100% Merino Inversion Base Layer Shirt in Bone Stripe
a woman wearing an Inversion Base Layer Shirt in Bone Stripe with matching bottoms
Women's 100% Merino Inversion Base Layer Shirt in Charcoal Heather/Bone
a woman wearing an Inversion Merino Base Layer Shirt in Charcoal Heather/Bone
Women's 100% Merino Inversion Base Layer Shirt in Black
Women's 100% Merino Inversion Base Layer Shirt in Iceberg Green
Women's 100% Merino Inversion Base Layer Shirt in Charcoal Heather
a woman wearing an Inversion base layer shirt in black with matching bottoms
a woman wearing an Inversion base layer shirt in black with matching bottoms
a woman wearing an Inversion base layer shirt in black from the back
a woman wearing an Inversion base layer shirt in Treetop with matching bottoms
a woman wearing an Inversion base layer shirt in Treetop from the back
a woman wearing an Inversion base layer shirt in Charcoal Heather/Bone
a woman wearing an Inversion base layer shirt in Charcoal Heather/Bone from the back
a woman wearing an Inversion base layer shirt in Bone Stripe with matching bottoms
a woman wearing an Inversion base layer shirt in Bone Stripe from the back
a woman wearing an Inversion base layer shirt in Iceberg Green with matching bottoms
a woman wearing an Inversion base layer shirt in Iceberg Green with matching bottoms from the back
closeup of the Inversion base layer shirt's sleeve in Bone Stripe
a woman setting up her splitboard wearing an Inversion base layer shirt in black with a beanie and ski pants
a woman splitboarding in an Inversion base layer shirt with a beanie and ski pants
a woman shoveling snow in a 100% Merino Inversion base layer shirt and Ridge beanie
Home/100% Merino Wool/Women's Inversion Heavyweight Crew Merino Wool Base Layer Shirt

Women's Inversion Heavyweight Crew Merino Wool Base Layer Shirt

$ 110$ 110 Save
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Description

When it's really cold out, our Inversion Base Layer Shirt is what you need. This 100% Merino wool base layer top is warm and soft but still breathable, so you'll stay comfortable no matter where the day takes you. It feels great on your skin, has a slightly longer cut to stay tucked in, and features discreet thumb holes that blend in when you don't need them. Merino wool naturally resists odor, so you'll be stink-free at après, and you can wear this top multiple times before washing.

Product Features
  • Natural, sustainable, and biodegradable Merino wool
  • All the benefits of Merino wool: resists odor, wicks moisture, breathes well, and regulates temperature
  • Merrow stitching (updated in 2025)
  • Backpack-friendly raglan construction
  • Discreet thumb holes
  • Long cut
  • Printed neck label
  • Removable care label
Fabric Details
  • 100% Merino wool
  • Heavyweight 270 GSM fabric
  • Super soft 18.5M Merino wool

Care: Machine wash on cold, hang dry, do not bleach or dry clean, iron on low wool setting. Learn more.

Sizing and Fit

Not sure what size to order? See our size guide.

Women's Inversion Base Layer Bottoms in Bone Stripe

Pair It With

Women's Inversion Heavyweight Merino Wool Base Layer Leggings

$ 110

Quick Buy  

Women's Size Guide

*NOTE: Our spring/summer 2025 and fall/winter 2025 collections have new sizing for women. Each product page has the correct size chart linked from it. Older products using the previous women's sizing have a note on the product page.


Finding the right size. The measurements below refer to body size, not garment dimensions (with the exception of the specs marked actual garment measurements). If you're between sizes, either size down for a tighter fit or up for a looser fit.

Our Size Numeric Size Chest Waist Hip
0 32.5"
25.5"
35"
XS 2 33.5"
26.5"
36"
4 34.5" 27.5"
37"
S 6 35.5" 28.5"
38"
8 36.5" 29.5" 39"
M 10 37.5" 30.5" 40"
12 39" 32" 41.5"
L 14 40.5" 33.5" 43"
16 42" 35" 44.5"
XL 18 43.5" 36.5" 46"

Looking for the inseam length? Refer to the product page to find out.


See the old size guide.


HOW TO MEASURE:

  • Chest — Measure under your arms around the fullest part of your chest.
  • Waist — Measure around your natural waistline.
  • Hip — Measure around the fullest part of your hips.

Actual Garment Measurements (listed on select product pages)
  • Sleeve Length — measured from the collar (at the highest shoulder point) to the sleeve opening
  • Body Length — measured from the highest shoulder point (at collar/shoulder seam) to the hem
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Description

When it's really cold out, our Inversion Base Layer Shirt is what you need. This 100% Merino wool base layer top is warm and soft but still breathable, so you'll stay comfortable no matter where the day takes you. It feels great on your skin, has a slightly longer cut to stay tucked in, and features discreet thumb holes that blend in when you don't need them. Merino wool naturally resists odor, so you'll be stink-free at après, and you can wear this top multiple times before washing.

Product Features
  • Natural, sustainable, and biodegradable Merino wool
  • All the benefits of Merino wool: resists odor, wicks moisture, breathes well, and regulates temperature
  • Merrow stitching (updated in 2025)
  • Backpack-friendly raglan construction
  • Discreet thumb holes
  • Long cut
  • Printed neck label
  • Removable care label
Fabric Details
  • 100% Merino wool
  • Heavyweight 270 GSM fabric
  • Super soft 18.5M Merino wool

Care: Machine wash on cold, hang dry, do not bleach or dry clean, iron on low wool setting. Learn more.

Sizing and Fit

Not sure what size to order? See our size guide.