Women's Ridge Merino Wool Thong Underwear




Created from popular demand, our Ridge Merino Wool Thong is our lightest and most minimal underwear that’s as soft as cotton but has all the benefits of Merino wool. This thong stays in place, wicks moisture, and resists odor, making it the perfect next-to-skin layer for any outdoor adventure.
It’s perfect for travel as it packs small and dries quickly, and it works great for multi-day excursions too. Rinse it in a creek or a hotel sink, hang it to quickly dry, and it’s ready for your next day. All of our underwear feature Merino wool next to skin, meaning you’re taking good care of what matters most – yourself and the planet, since all of our underwear are non-toxic, chemical-free, and produced sustainably. Grab a few pairs, you’ll be glad you did.
- Merino wool blend that’s odor-resistant, breathable and temperature regulating
- Class-leading durability thanks to our (m)Force Technology
- Good for you and good for the environment
- Low-profile flatlock seams
- Printed label and removable care label for maximum comfort
- Product weight: XS 0.5oz, S 0.6oz, M 0.6oz, L 0.7oz, XL 0.8oz
- 83% Merino wool, 12% recycled nylon, 5% spandex
- 170 GSM fabric weight
- (m)Force™ technology
- Soft 17.5M Merino wool
Care: Machine wash on cold, hang dry, do not bleach or dry clean, iron on low wool setting. Learn more.
- Classic fit
This item has updated women's sizing. Check the new size guide to get the right fit.
Women's Size Guide
*NOTE: Our spring/summer 2025 collection has new sizing for women. Each product page has the correct size chart linked from it, and all products using the new sizing have a note in the Sizing/Fit tab.
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.
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.
- 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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