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Siren Thong - Women's

4.8 out of 5 stars
5 Reviews
Current price: $22.50 Original price: $30.00
25% off


Size Chart


Why We Like The icebreaker Siren Thong

From the yoga studio to the trail, the icebreaker Siren Thong keeps us covered with merino wool's natural odor-fighting, sweat-wicking power while staying discreet under our tights.


  • Woolly thong to remove underwear lines from your activewear
  • Merino wool blend manages temp, moisture, and odor
  • Stretch construction moves with you
  • Item #ICE00HN
83% merino wool, 12% nylon, 5% Lycra
natural attribute of merino wool
casual, running, training
Manufacturer Warranty
1 year

Overall Rating

5 based on 5 ratings

Review Summary

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

Fits Slightly Small

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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5 out of 5 stars

May 8, 2024

Better than expected

[This review was collected as part of a promotion.] I've been looking for Merino underwear and have tried a few different brands and these are my favorite by far.


Originally reviewed on

5 out of 5 stars

May 1, 2024

The only panties I wear!

[This review was collected as part of a promotion.] These are the best panties for me! I have over a dozen pairs. They are the only panties that I have found that are: comfy, keep me odor free, do not irritate my skin, fit like a glove, are high quality, wash up well, and last a while. Cannot recommend these enough. The only panties I wear.


Originally reviewed on

5 out of 5 stars

April 10, 2024

Love love love!

[This review was collected as part of a promotion.] How did it take me so long to get undies etc for skiing?! Makes a huge difference... even though I went with the thong, I swear it kept my bootie warmer. Very comfortable, forgot I was even wearing them!


Originally reviewed on

5 out of 5 stars

February 1, 2024

Favorite thong!

I've used it several times
Size Bought:
5' 6"

I have a hard time finding underwear I love - these are perfect and amazing. I came back to buy another pair! Fit great, don't dig into your hips, and the rise is perfect, not to high and not to low.

Kirstin K
4 out of 5 stars

September 7, 2022

Love it but did not fit

Size Bought:

Love this bra and really wanted to keep it however though the band fit according to size chart provided , the cup was way to small and barely covered my boobs. I wear size 70B (european size) and ordered size XS. Will get a size S but I am afraid the band might be to big then.

Ioana H