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Women's Merino Thong

Name: Women's Merino Thong
Brand: Unbound Merino
SKU: W-SSTG-BLCK-S
Price: 35.0 USD
Availability: InStock
Rating: 3.7 (21 reviews)

3.7

Rated 3.7 out of 5 stars

21 Reviews

$35

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Customer Photos

Model Info +

Model is 5'10", has a 24" waist and is wearing size M

Women's Merino Thong

3.7

Rated 3.7 out of 5 stars

21 Reviews

$35

This super-stretchy thong comes with a no-show, seamless cut that feels lightweight and breathable no matter the excursion. Enjoy everyday comfort that is elevated with the natural performance of Merino wool.

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Color Black

Size

Size guide

S M L XL

Customer fit: based on XX reviews

3.7

Rated 3.7 out of 5 stars

Based on 21 reviews

Slide 1 selected

Total 5 star reviews: 8 Total 4 star reviews: 4 Total 3 star reviews: 5 Total 2 star reviews: 3 Total 1 star reviews: 1

How did you find the fit?Rated -1.3 on a scale of minus 2 to 2

Write a Review (Opens in a new window)

21 reviews

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MP
Michaela P.
Verified Buyer
Reviewing
Women's Merino Thong Sand / XL
I recommend this product
What size did you buy? XL
Rated 5 out of 5 stars
5/7/26
Great quality
Amazing quality. I love that it dries over night. I am 125lbs and wear the XL (M was too tight and no one needs that!) so be aware that they run very small. But I’m definitely buying another pair
How did you find the fit?Rated -2.0 on a scale of minus 2 to 2
Was this helpful?
M
Maria
Verified Buyer
Reviewing
Women's Merino Thong Sand / S
I do not recommend this product
What size did you buy? S
Rated 2 out of 5 stars
2/23/26
Very snug and thick
Very disappointed by these. They are very snug, thick, and quite uncomfortable. I was conscious of these 100% of the time that I wore them. Since they can't be returned, I've unfortunately bought a pair of underwear that I can't use. I'm giving this style another chance and am purchasing the size up. I'm always an S in underwear, but now I'll try the mediums. I never have to size up! I also have the bikini style underwear, which fits great and is true to my S size.
How did you find the fit?Rated -2.0 on a scale of minus 2 to 2
Was this helpful?
HW
Heather W.
Verified Buyer
Reviewing
Women's Merino Thong Black / L
I recommend this product
What size did you buy? L
Rated 5 out of 5 stars
1/29/26
Good fit
Love the fabric — fits well
How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
Was this helpful?
MJ
Merino J.
Verified Buyer
Reviewing
Women's Merino Thong Sand / L
I recommend this product
Rated 4 out of 5 stars
12/6/25
Comfy, runs small
Highly recommend!
Purchased size L (5’6, 140, athletic build, denim size 27/28)
How did you find the fit?Rated -1.0 on a scale of minus 2 to 2
Was this helpful?
BW
Beth W.
Verified Buyer
Reviewing
Women's Merino Thong Sand / M
I recommend this product
Rated 4 out of 5 stars
12/6/25
Ok but not the most comfortable
This underwear is ok, but it's thicker and wider than I expected, so not the most comfortable for me. I actually didn't realize it was Final Sale when purchasing. I buy underwear all the time at the Gap, Nordstrom, etc and you can try it on with other underwear on and return if it doesn't fit right. I find it misleading that Unbound doesn't mark Final Sale boldly before you purchase such an insanely expensive piece of underwear! I found out after the fact when I tried to return and read the fine print. Ah well, I kept it, it was fine, the fabric is good quality but it's not the most comfortable and it's really pricey. Had I thought to go read their FAQ fine print, I would not have chanced it.
How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
Was this helpful?

Only 4 payments of $9 with

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Why our customers
love us

Our founder
reveals all

Anti-odor
Fast drying
Wicks moisture
Light and breathable

Description

Learn More

Fabric and Details

60% Merino Wool, 34% Nylon, 6%Spandex
Woolmark^® certified
290 gsm
Seamless Knit Fabric for all day comfort.
Lightweight
Fast drying

Fiber micron: Ultrafine 16.5

15 µm

16.5 µm

25 µm

Care instructions

Machine wash in cold gentle cycle
Wash with like colors inside out
Do not bleach
Do not tumble dry
Iron in low temperature
Lay flat to dry in shade

Merino Care 101

Women's bottoms size guide

Customer fit: based on XX reviews

3.7

Rated 3.7 out of 5 stars

Based on 21 reviews

Slide 1 selected

Total 5 star reviews: 8 Total 4 star reviews: 4 Total 3 star reviews: 5 Total 2 star reviews: 3 Total 1 star reviews: 1

How did you find the fit?Rated -1.3 on a scale of minus 2 to 2

Write a Review (Opens in a new window)

21 reviews

Sort

MP
Michaela P.
Verified Buyer
Reviewing
Women's Merino Thong Sand / XL
I recommend this product
What size did you buy? XL
Rated 5 out of 5 stars
5/7/26
Great quality
Amazing quality. I love that it dries over night. I am 125lbs and wear the XL (M was too tight and no one needs that!) so be aware that they run very small. But I’m definitely buying another pair
How did you find the fit?Rated -2.0 on a scale of minus 2 to 2
Was this helpful?
M
Maria
Verified Buyer
Reviewing
Women's Merino Thong Sand / S
I do not recommend this product
What size did you buy? S
Rated 2 out of 5 stars
2/23/26
Very snug and thick
Very disappointed by these. They are very snug, thick, and quite uncomfortable. I was conscious of these 100% of the time that I wore them. Since they can't be returned, I've unfortunately bought a pair of underwear that I can't use. I'm giving this style another chance and am purchasing the size up. I'm always an S in underwear, but now I'll try the mediums. I never have to size up! I also have the bikini style underwear, which fits great and is true to my S size.
How did you find the fit?Rated -2.0 on a scale of minus 2 to 2
Was this helpful?
HW
Heather W.
Verified Buyer
Reviewing
Women's Merino Thong Black / L
I recommend this product
What size did you buy? L
Rated 5 out of 5 stars
1/29/26
Good fit
Love the fabric — fits well
How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
Was this helpful?
MJ
Merino J.
Verified Buyer
Reviewing
Women's Merino Thong Sand / L
I recommend this product
Rated 4 out of 5 stars
12/6/25
Comfy, runs small
Highly recommend!
Purchased size L (5’6, 140, athletic build, denim size 27/28)
How did you find the fit?Rated -1.0 on a scale of minus 2 to 2
Was this helpful?
BW
Beth W.
Verified Buyer
Reviewing
Women's Merino Thong Sand / M
I recommend this product
Rated 4 out of 5 stars
12/6/25
Ok but not the most comfortable
This underwear is ok, but it's thicker and wider than I expected, so not the most comfortable for me. I actually didn't realize it was Final Sale when purchasing. I buy underwear all the time at the Gap, Nordstrom, etc and you can try it on with other underwear on and return if it doesn't fit right. I find it misleading that Unbound doesn't mark Final Sale boldly before you purchase such an insanely expensive piece of underwear! I found out after the fact when I tried to return and read the fine print. Ah well, I kept it, it was fine, the fabric is good quality but it's not the most comfortable and it's really pricey. Had I thought to go read their FAQ fine print, I would not have chanced it.
How did you find the fit?Rated 0.0 on a scale of minus 2 to 2
Was this helpful?

in

cm

Size	Waist	Hip	US Size
XS	24 - 2561 - 63.5	35 - 3689 - 91.5	0-2
S	26 - 2766 - 68.5	37 - 3894 - 96.5	4-6
M	28 - 2971 - 73.5	39 - 4099 - 101.5	8-10
L	30 - 3276 - 81	41 - 43104 - 109	12-14
XL	33 - 3584 - 89	44 - 46112 - 117	16-18

Garment measurements	S	M	L	XL
Waist Width	12.2531	1333	13.7534.9	14.536.8
Hip Width	12.2531	1333	13.7534.9	14.536.8
Total Height	7.519	820.3	8.521.6	922.9

1CHEST

Measure under your arms around the widest part of your chest.

2WAIST

Place the measuring tape at your natural waist - above the hips at the narrowest part of your torso.

3HIP

Measured around the fullest part of the hip, parallel to the floor.

1 Waist Width

Measure along waistband curve edge to edge.

2 Hip Width

Measure 3" above crotch point, side to side.

3 Thigh Width

Measure 1" below crotch, edge to edge.

4 Leg Opening

Measure along hem edge, side to side.

5 Inseam Length

Measure from crotch point to bottom hem edge.

North America
USA Standard Shipping 2 to 6 business days - $4.99 for orders under $100. Free for orders $100+. Expedited Shipping - 1-4 business days - $14.65 FedEx 1 day delivery - Rate calculated at checkout FedEx 2 day delivery - Rate calculated at checkout	Canada Standard Shipping- 2 to 5 business days - $6.99 CAD for orders under $100 CAD. Free for orders $100+ CAD. Expedited Shipping - 1-4 business days - $14.65
International
Please note that international customers (outside of Canada and the United States) may be subject to taxes or duties upon delivery Europe Zone 1 Germany, Belgium, Croatia, Denmark, Estonia, Finland, France, Hungary, Ireland, Latvia, Luxembourg, Netherlands, Spain, Sweden, Switzerland, Poland, Portugal, Bulgaria, Greece, Italy, Malta, Austria, Cyprus Standard shipping ($200 and up) 2 to 3 weeks - FREE Standard shipping 2 to 3 weeks - $14.99 DHL Express Worldwide - 3-6 days - Calculated at checkout Europe Zone 2 Iceland, Lithuania, Norway, Romania, Slovakia, Slovenia, Czechia, Gibraltar Standard shipping ($200 and up) 2 to 3 weeks - FREE Standard shipping 2 to 3 weeks - $14.99 DHL Express Worldwide - 3-6 days - Calculated at checkout United Kingdom Standard shipping 2 to 3 weeks - FREE Standard shipping - (Duties and Taxes Paid) 2 to 3 weeks - FREE DHL Express Worldwide - 3-6 days Calculated at checkout	Australia, New Zealand Standard shipping ($200 and up) 2 to 4 weeks - FREE Standard shipping 2 to 4 weeks - $19.99 DHL Express Worldwide - 4-6 days - Calculated at checkout Japan, Hong Kong SAR, South Korea Standard shipping ($250 and up) 2 to 4 weeks - FREE Standard shipping 2 to 4 weeks - $19.99 DHL Express Worldwide - 3-6 days - Calculated at checkout Malaysia, Singapore Standard shipping ($250 and up) 2 to 4 weeks - FREE Standard shipping 2 to 4 weeks - $14.99 DHL Express Worldwide - 3-6 days - Calculated at checkout Rest of world Standard shipping 2 to 4 weeks - $19.99

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Women's Merino Thong

Model Info +

Women's Merino Thong

Women's bottoms size guide

in

cm

1CHEST

2WAIST

3HIP

1 Waist Width

2 Hip Width

3 Thigh Width

4 Leg Opening

5 Inseam Length

North America

USA

Canada

International

Europe Zone 1

Europe Zone 2

United Kingdom

Australia, New Zealand

Japan, Hong Kong SAR, South Korea

Malaysia, Singapore

Rest of world

Who is the recipient?

Free shipping on orders over $100

Home / All Products

Women's Merino Thong

Model Info +

Women's Merino Thong

Women's bottoms size guide

in

cm

1CHEST

2WAIST

3HIP

1 Waist Width

2 Hip Width

3 Thigh Width

4 Leg Opening

5 Inseam Length

North America

USA

Canada

International

Europe Zone 1

Europe Zone 2

United Kingdom

Australia, New Zealand

Japan, Hong Kong SAR, South Korea

Malaysia, Singapore

Rest of world

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