4.8 star rating 77 Reviews
(64) (11) (2) (0) (0)
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- Reviews (77)
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M
Melanie S.
Verified Buyer
5.0 star rating
12/12/24
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It runs small
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Best bikini underwear
Review by Melanie S. on 12 Dec 2024 review stating Best bikini underwear
Every time these go on sale, I buy a pair - worth every penny. So comfy!
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Madeleine F.
Verified Buyer
5.0 star rating
08/12/24
Grandeur du produit:
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Ma 5e paire
Review by Madeleine F. on 8 Dec 2024 review stating Ma 5e paire
Je les aime beaucoup. Confortables, tiennes bien en place.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Mariève
Verified Reviewer
3.0 star rating
27/11/24
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taille très basse
Review by Mariève on 27 Nov 2024 review stating taille très basse
On aime les produits Icebreaker mais des culottes en merino, on les veut qui couvrent les fesses quand on joue dehors. Ce modèle est très bas, ne me convient malheureusement pas.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Katie S.
Verified Buyer
5.0 star rating
27/09/24
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It runs small
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True to size:
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It runs big
Really great underwear
Review by Katie S. on 27 Sep 2024 review stating Really great underwear
These underwear are so great for running. I was looking for underwear to wear on my longer runs (half marathon and longer) that weren’t synthetic and these fit the bill. They stay in place and they breathe. Not itchy. Highly recommend.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
J
Julie D.
Verified Buyer
5.0 star rating
05/09/24
Parfait pour la rando
Review by Julie D. on 5 Sep 2024 review stating Parfait pour la rando
Les meilleures sous-vêtements pour la longue randonnée.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Lisa G.
Verified Buyer
4.0 star rating
07/08/24
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It runs small
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True to size:
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It runs big
The colour is great! The
Review by Lisa G. on 7 Aug 2024 review stating The colour is great! The
The colour is great! The fabric seems to be much thinner than the last pair that I purchased a number of years ago. I think the quality therefore has gone down.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
C
Catherine G.
Verified Buyer
5.0 star rating
31/07/24
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Merino!
Review by Catherine G. on 31 Jul 2024 review stating Merino!
Fast drying, light, good climate controle, perfect sizing.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Andrea T.
Verified Buyer
5.0 star rating
29/07/24
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Still the best
Review by Andrea T. on 29 Jul 2024 review stating Still the best
I've worn the Siren Bikini underwear pretty much exclusively for at least 5 years. I still own every pair I've ever purchased and just keep adding to the collection. They're very comfortable, breathable, wash well, and air dry quickly. The cut suits my frame (ample hips and bum, short torso) better than the Smartwool counterpart which seems to hav...Read MoreRead more about I've worn the Siren Bikini underwear
e a higher rise and I find the elastic digs in a little more. I'm 5'4", weight fluctuates from 130-145lbs and the medium has always worked. The Praline colour was a nice surprise -- could make for a nice "nude" option depending on your skin tone. Read LessRead less about I've worn the Siren Bikini underwear
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
J
Jessica W.
Verified Buyer
5.0 star rating
13/07/24
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It runs small
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It runs big
True to size:
It runs small
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It runs big
Favourite undies
Review by Jessica W. on 13 Jul 2024 review stating Favourite undies
The icebreaker siren bikini panties are fantastic. I own multiple pairs and am always keeping an eye out for a good sale to buy more. They’re excellent for long backcountry trips, but are also great for the gym. Fast drying, comfortable, moisture wicking.
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
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Jennifer H.
Verified Buyer
5.0 star rating
19/06/24
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Comfortable
Review by Jennifer H. on 19 Jun 2024 review stating Comfortable
Excited to use these for an upcoming hike. Traditional bikini shape, glad I sized up
On Siren Bikini - Women's|-|Culotte de bikini Siren - Femme
Color:
Praline
Size:
Include our
Lifetime Membership
for $20.00 $34.99 to save 5% (limited time)
This product is not eligible for returns. See our return policy for more details.
The Siren Bikini is stretchy and slim-fit underwear for everyday comfort and active pursuits.
The ultralight 150g/m² corespun fabric is made with merino fibers wrapped around a nylon core, for underwear that is durable and soft next to your skin. The low-profile style features a modern, bulk-free fit, and the forward-set side seams eliminate chafing. Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.
• Merino Corespun-durable merino blend regulates body temperature in all weather conditions
• Breathable, comfortable, odor-resistant, stretchy, durable, quick-drying
• Slim Fit
Materials: 83% Merino Wool, 12% Nylon, 5% Lycra® Exclusive of decoration
Care
• Machine wash warm
• Wash inside out with like colors
• Do not use softener
• Do not bleach
• Do not tumble dry
• Line dry in shade
• Warm iron
• Do not iron print, trims and accessories
• Do not dry clean
Availability:
Canada Only

Availability:
Canada Only
