Icebreaker Women's Siren Thong - Mountain Steals

Women's Siren Thong

Icebreaker Women's Siren Thong is rated 4.8 out of 5 by 100.
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4.8 Star Rating
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The Icebreaker Women's Siren Thong is a women's thong made from corespun fabric for durability. It provides bulk free comfort at the openings and the forward placed side seems provide additional comfort.

Products on Sale are Discontinued Styles or Colors.

Product Description
Item No.   10303144

FEATURES of the Icebreaker Women's Siren Thong

  • Corespun fabric for enhanced durability
  • Bulk free comfort at waist and leg opening
  • Side seams moved forward for additional comfort

Product Specifications
Primary Fabric: Merino Wool
Gender: Womens
Features: Packable, Quick Drying
Sustainability: Animal Friendly, Eco-friendly
Fabric Weight: 4.42 oz / Square Yard
Disclaimer: We only ship this brand to US Addresses.
Best Use: Casual, Running
Fit Type: Slim Fit
Product Reviews
Rated 5 out of 5 by from Very comfortable I find this thong to be quite comfortable once I got the right size (5'6, 135, athletic build). As other reviewers have mentioned the sizing for these is different than some other IB underwear. I initially purchased a small because I have the hipkinis in a small. For me the small fit well around the hips but the thong was too 'short' and rode up uncomfortably. I now have mediums, and they fit much better even if the waist is a bit looser. The only other note is I did use a seam ripper to carefully remove the tag. I'd prefer a printed tag, or none, but I appreciate that at least the fabric tag is removable since the stitching for it is separate.
Date published: 2020-06-13
Rated 5 out of 5 by from Can't just order one pair I have never owned a pair of merino wool underwear. I have a big backpacking trip coming up & everything I have read insists that I buy merino wool underwear, but in my mind, wool is itchy and uncomfortable and I was really skeptical. So, I ordered one pair from here to test them out. I wore them all day yesterday and... I just bought 4 more pairs. I was so comfortable, felt none of my usual irritation, and felt really good about supporting a company that puts such an obvious emphasis on sustainability & providing their customers with the utmost transparency into how they operate. I can confidently say any future underwear purchases will come from this site!
Date published: 2020-03-12
Rated 5 out of 5 by from Loved so much I bought 7 more!! These are super comfortable and breathable. Anyone who has chronic UTI problems, buy these and throw out all your current underwear. These are also fairly sexy looking and no lines with yoga pants. Highly recommend, and I never write reviews. I felt inclined to write a review because of my UTI struggle. Icebreaker, please make these available in a 3 pack or 5 pack at a discounted price. They would sell!! :D
Date published: 2020-01-09
Rated 5 out of 5 by from A thong that breathes and does not irritate I'll definitely be buying several more when I can. The fabric is comfortable. It felt different than the cotton I'm used too. It was light, breathed and it was the first thong that didn't feel like butt floss. Because it breathed so well It was able to handle being worn all day in 90* Florida weather without smelling or becoming uncomfortable or gross feeling. I've been careful to hand wash mine because the fabric seems kind of thin. It dries super fast, and would be great underwear for camping because of being so quick to dry when hand washing. It's held up great and is easy to wash.
Date published: 2018-06-06
Rated 5 out of 5 by from Travel well and won't wear out! I am a diehard fan when it comes to wool for everyday and travel. These undies are great for minimalist traveling, you can wash in the sink and they're dry in a few hours. Unlike other brands, the edges of these are not as stretchy and are more resilient because of the wider bands, so they don't fray after a few wears. The cut is a tiny bit higher than I would like, but I also sized up a little from my typical XS to a S, just to get a looser fit.
Date published: 2017-09-07
Rated 4 out of 5 by from A basic that's almost perfect This is a comfortable thong, runs true to size on me. However as a personal preference I prefer a bit more coverage in the crotch area (side to side) and think the second layer of fabric in that area should be extended about an inch more towards the front. Otherwise it is a good design.
Date published: 2016-09-16
Rated 3 out of 5 by from More gusset please! I like these underwear on paper. Wool, breathable, doesn't stink after a long day of work. But the gusset is SO SMALL. It does not cover enough of the underwear, so it's just pointless. It needs at least another inch added to it. The band is also a little tighter than I would want, but sizing up would be too large. Needs work, but it's a nice pair of underwear for someone like me who's used to wearing thongs, but works outdoors and sweats a lot.
Date published: 2019-02-09
Rated 4 out of 5 by from crotch lining crotch lining too short coverage. Suggest to increase crotch lining to 1.5 inches more towards the front. It have have been perfect! Would recommend this product to all of my friends should the crotch lining had more coverage.
Date published: 2017-03-31
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Size Guide

Icebreaker Womens Base Layers

SIZE X-Small Small Medium Large X-Large
Bust 30 - 32" 32 - 34" 34 - 37" 37 - 40" 40 - 42"
Arm Length 30.25 - 30.5" 30.05 - 30.75" 30.75 - 31" 31 - 31.25" 31.25 - 31.5"
Waist 24 - 26" 26 - 22" 28 - 30" 30 - 32" 32 - 35"
Hip 34 - 36" 36 - 38" 38 - 40" 40 - 42" 42 - 44"

Chest / Bust: Measure around the fullest part of the chest, keeping the tape parallel to the floor.

Waist: Measure around the narrowest point, keeping the tape parallel to the floor.

Hip: Stand with feet together and measure around the fullest point of the hip, keeping the tape parallel to the floor.

Arm Length: Measure from shoulder (Humerus) to wrist.

SLIM FIT: A snug, close-to-body fit for low bulk layering.

REGULAR FIT: Neither snug or loose. These garments can be worn solo or over other layers.

RELAXED FIT: Loose fitting lightweight layers.