Women’s Merino 150 Siren Bikini
Women’s Merino 150 Siren Bikini
in 2 offers
last seen 12 May 2026
The lowest price we last saw for Icebreaker Womens Siren Bikini Umber was $30.00 at Find Your Feet, compared across 2 retailers (last seen 12 May 2026). Prices may have changed since.
The all-time low we recorded was $30.00 on 12 Mar 2026.
Prices last updated 12 May 2026.
Icebreaker Womens Siren Bikini Umber
Women’s Merino 150 Siren Bikini
Women’s Merino 150 Siren Bikini
Last updated at 12/05/2026 02:02:55
Icebreaker Merino 150 Siren Bikini (Women's) - Umber Umber / L
Delivery between 18–26 May $9.95
Icebreaker Womens Merino 150 Siren Bikini Umber L Waist Size: L, Colou
Delivery $113.12
originally posted on icebreaker.com
I'm a total convert to wool underwear. I started off buying 1 pair, found that I really liked them. Bought another 2, and quickly realized they're the only ones I want to wear on a daily basis. Not just for outdoor activities but working my office job or working out at the gym. Nothing is as breathable and comfy as these underwear. The challenge is the price! Very pricey and I hope they last several years.
originally posted on mountainsteals.com
I prefer the hipkini style when it comes to fit & comfort, this one runs a little small even considering the Icebreaker brand runs small & having sized up. It fits, but is a little snug and hoping it’ll stretch with wear. Barely covers my butt and has to be positioned perfectly or it’s hanging out a bit. Also tight in the leg seams, which can be uncomfortable after awhile. I’m 5’1” 120 lbs athletic build, ordered a medium. Do have some hip & glute curve considering my size but nothing other brands/styles can’t cover. I think upsizing to a large would’ve been too much, so sizing is awkward for this style.
originally posted on icebreaker.com
I really like the siren thongs for everyday wear and travel. They wash up easily and dry quickly too, and the fit is decent. I'm usually between a medium and large and prefer the large size for these so I can pull straps up higher for a more legging-friendly fit. 5'4" 150lb pear shape for reference.I do wish the gusset was longer, it doesn't really do its job. I also detest the excessive tags... removing them is difficult without ruining the garment, and they're totally unnecessary.Overall a good product, but it could be great with a few tweaks.
| Material characteristics | breathable, elastic, moisture wicking |
| Material outer fabric | 12% Nylon, 5% Elastane, 83% Wool (Merino) |
| Outer fabric | Merino Wool |
Icebreaker Merino 150 Siren Bikini (Women's) - Umber Umber / L
Delivery between 18–26 May $9.95
Icebreaker Womens Merino 150 Siren Bikini Umber L Waist Size: L, Colou
Delivery $113.12
I'm a total convert to wool underwear. I started off buying 1 pair, found that I really liked them. Bought another 2, and quickly realized they're the only ones I want to wear on a daily basis. Not just for outdoor activities but working my office job or working out at the gym. Nothing is as breathable and comfy as these underwear. The challenge is the price! Very pricey and I hope they last several years.
I prefer the hipkini style when it comes to fit & comfort, this one runs a little small even considering the Icebreaker brand runs small & having sized up. It fits, but is a little snug and hoping it’ll stretch with wear. Barely covers my butt and has to be positioned perfectly or it’s hanging out a bit. Also tight in the leg seams, which can be uncomfortable after awhile. I’m 5’1” 120 lbs athletic build, ordered a medium. Do have some hip & glute curve considering my size but nothing other brands/styles can’t cover. I think upsizing to a large would’ve been too much, so sizing is awkward for this style.
I really like the siren thongs for everyday wear and travel. They wash up easily and dry quickly too, and the fit is decent. I'm usually between a medium and large and prefer the large size for these so I can pull straps up higher for a more legging-friendly fit. 5'4" 150lb pear shape for reference.I do wish the gusset was longer, it doesn't really do its job. I also detest the excessive tags... removing them is difficult without ruining the garment, and they're totally unnecessary.Overall a good product, but it could be great with a few tweaks.
Was excited to use these for everything from outdoor activities to day-today.But! The gusset is far too small as so many others have pointed out. I could live with this, except all of my pairs have ripped or developed holes where the gusset ends within 3-4 months of purchase. This is unacceptable IMO for such $$$ underwear. Won't buy again until fixed! If fixed, would be unstoppable!
I love the comfort and fit of these lightweight briefs. I've had a pair for years (still great) and decided to treat myself to more pairs despite the cost as they last for ages. I found the sizing difficult though (I'd cut the itchy label out of my old ones) as the site provides waist sizes (we need hip measurements for briefs). I ordered Small which fitted well but on wearing I found that they showed some VPL. I ordered further pairs in Medium which fit more loosely and don't show VPL. I don't like Collect Plus for returns though - would prefer options.
This is my favorite underwear I have ever owned. I only own one but I have had it for over a year now and it's the only underwear I want to wear. I work 24 hour shifts and three separate jobs that are very active and sometimes I get really busy between all of those things and I feel comfortable in these for way longer stretches of time than I do in any other underwear. Sometimes I end up not having a choice but to wear them for over 24 hours and it's totally fine. I feel like with all of my other underwear it drives me crazy and I feel gross about halfway through the day and I feel like I need to change them. These keep their shape and size and are breathable and keep me feeling clean. They are just so comfortable. I would have more if I could afford them. I do have ... MoreThis is my favorite underwear I have ever owned. I only own one but I have had it for over a year now and it's the only underwear I want to wear. I work 24 hour shifts and three separate jobs that are very active and sometimes I get really busy between all of those things and I feel comfortable in these for way longer stretches of time than I do in any other underwear. Sometimes I end up not having a choice but to wear them for over 24 hours and it's totally fine. I feel like with all of my other underwear it drives me crazy and I feel gross about halfway through the day and I feel like I need to change them. These keep their shape and size and are breathable and keep me feeling clean. They are just so comfortable. I would have more if I could afford them. I do have one issue that I hope Icebreaker can work on. The internal gusset could maybe extend a bit further forward. I find that it doesn't quite extend as far as it needs to in order to have the coverage I need in that area. If that gusset extended maybe a 1/2 inch further it would be perfect and even more comfortable and effective. And of course I'd love to have more warm color options :)
I have worn cheap retail store underwear and never felt truly comfortable. I researched if this was a common case amongst women and I realized how much more I should probably be investing in my undergarments. I did not want to settle for another pair of synthetic wear, so I looked up the best brands for natural undergarments and knew I needed to try icebreaker in this area. I am extremely satisfied and will never bother to wear any other undergarment brand for my active lifestyle.
Despite using the size guide, which led me to buy my current normal size, the fit was weird, but doable. They fit on my hips where my pants would sit, but it does not cover my bum. When I put them on, the backside of the underwear dips down in a curve - aka not enough booty room. For reference I am 5'10; 32 waist; 44 hips. Planning to try to size up and hoping for the best. FYI - purchased the women's boy shorts (L) and those were true to size and great fit!
I was super excited to get this merino bikini brief. I wear size small in all pants and underwear, so I didn't even think about it and threw out the packaging for these. Trying them on - they're too small. Like it will be massive visible panty line wearing these. I would mark this small size as extra small. It's an expensive mistake on my part to not be able to exchange these. I trusted the small would be the same as EVERY other brands small. It's not.
I've tried basically every active brand undies out there (looking for something a little less pricey usually), and always end up biting the bullet and coming back to these. Bar none they're the best for comfort-odor-east clean-quick dry. I've worn them backpacking-extended paddle board trips- multi day cross country ski trips-snowboarding-HIIT workouts-yoga- countless camping trips- International backpack type traveling- trekking- it's true, I literally live in them every day. They also perform well for series watching- couch cuddling- leisurely walks- reading- beer and wine drinking....you name it :) just get them already
| Material characteristics | breathable, elastic, moisture wicking |
| Material outer fabric | 12% Nylon, 5% Elastane, 83% Wool (Merino) |
| Outer fabric | Merino Wool |
