In stock, ships fast.
2 day standard shipping
Easy returns, free exchanges
Designed in Seattle
Experience invisible comfort with our classic Thong's smooth, no-elastic waistband that disappears under any garment. The 95% merino wool construction offers natural temperature regulation and softness against your skin. Without elastic to provide grip, we suggest sizing down to ensure your ideal fit.
Wash: Pop your Woolly in the machine on a cold cycle with similar colors. But be careful—fine merino fibers can snag on zippers, buckles, and Velcro. Avoid washing with jeans, jackets, backpacks, or any harsh fabrics.
Dry: Tumble dry on low or go au naturel and hang it up to dry.
Avoid Bleach: Skip the bleach—it’s not a friend to wool fibers.
No Iron Needed
Pilling: Wool may pill over time, but turning your garments inside out before washing can help slow this down.
Air Dry Option: For the air dry lovers out there, lay your wet Woolly on a towel, roll it up like a burrito to gently squeeze out extra moisture, then hang it up for a breezy air dry!
One Year Guarantee
People who make the move to merino typically don't go back. We're so confident that our underwear is the best around that we'll back them for a full year. We want you to be happy! If for any reason your Woolly undies aren't top notch we'll replace them.
No fuss just comfy butts.
Responsible Wool Certified
Our Responsible Wool Standard (RWS) certified supply chain verifies high standards of animal welfare and land management practices in wool production and tracks the certified material from farm to final product.
Certified by Control Union: 1313848
Plastic Free Packaging
Woolly's product packaging is 100% recyclable and plastic free. We constantly strive to improve the sustainability of our operations by reducing waste, reselling our returns, and donating our unsellable product.
These are just a few of the ways Woolly does business better
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Rated 4 out of 5
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Rated 1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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Love these...very soft and comfy
| Comfort |
Rated 5 out of 5
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| Fit |
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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I had to exchange sizes on 3 pairs of thongs and 2 tank tops. Eleonore was amazing! The wool is a great weight and I've consistently used all of it for hiking, climbing, biking, etc.
Recently I brought them all with me to travel to the French Alps. The wool takes up less space, doesn't smell after repeat wearing, and the thongs are easy to hand wash at the hotel.
| Comfort |
Rated 5 out of 5
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| Fit |
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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I ordered one pair to test the product. I fell in love instantly. I love the soft, lightweight feel of the fabric. The thong portion of the underwear are a good fit for me; not to thick to be annoying, nor to wide or narrow to protect the areas that need covering. I do not have a problem with panty lines on myself or showing through my clothing. Definitely moisture wicking and comfortable to wear on swelter hot days or working out.
Shipping is fast and prompt. I had one issue with sizing which customer service was prompt and efficient at fixing. I am normally a medium, wearing a size 7 or 8 jean, and I feel comfortable in a Small.
After my test pair, I bought 2 5-packs. They will be replacing all my inventory. I hope to try other Wooly products!
| Comfort |
Rated 5 out of 5
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Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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As a career firefighter I have gone through every style, brand and combination of material that women’s underwear has to offer. Sometimes I get deployed for 21+ days with limited access to laundry or adequate showers.
Woolly has been a game changer. I can wear these for a 16 hour (hot, sweaty and dirty) shift and they resist odor, don’t hold moisture and don’t chafe.
Thank you Woolly
-From your local Fire-Woman
| Comfort |
Rated 5 out of 5
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| Fit |
Rated 1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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We love hearing this, and love having you a part of the Woolly family!
I bought a thong from the top 5 wool underwear companies so I could compare and these were by far my favorite. They arrived the soonest, are the most comfortable, are breathable, and are super cute.
| Comfort |
Rated 5 out of 5
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| Fit |
Rated 1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is Just Right and 2 is Runs Large
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