4.6 star rating 61 Reviews
(48) (6) (4) (1) (2)
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- Reviews (61)
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M
Mila M.
Verified Buyer
5.0 star rating
02/03/24
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Super comfortable, but fits small
Review by Mila M. on 2 Mar 2024 review stating Super comfortable, but fits small
Super light, comfortable and dries quickly in those
sweaty moments. Surprisingly had to buy the XL as the medium and large were too tight (there are no adjustment in the back, only in the straps). I’m a 36C, 120lbs, 5´7.
sweaty moments. Surprisingly had to buy the XL as the medium and large were too tight (there are no adjustment in the back, only in the straps). I’m a 36C, 120lbs, 5´7.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
L
lorraine J.
Verified Buyer
5.0 star rating
12/12/24
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Confort
Review by lorraine J. on 12 Dec 2024 review stating Confort
Agréable et confortable, parfait pour tous les jours ainsi que les activités sportives.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
K
Karine L.
Verified Buyer
5.0 star rating
10/09/24
Très confortable
Review by Karine L. on 10 Sep 2024 review stating Très confortable
Super confortable et bon soutien pour porter pendant la journée ou sport léger!
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
J
Julie N.
Verified Buyer
5.0 star rating
08/04/24
Merino Siren Bra
Review by Julie N. on 8 Apr 2024 review stating Merino Siren Bra
True to size et super confortable. Tellement, que je l'ai maintenant en 4 différentes couleurs.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
F
Frederic B.
Verified Buyer
5.0 star rating
11/03/24
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Agréable à porter
Review by Frederic B. on 11 Mar 2024 review stating Agréable à porter
Je porte du 34B et j'ai pris du médium. La taille est parfaite.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
T
Tina G.
Verified Buyer
1.0 star rating
29/03/25
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Way too small
Review by Tina G. on 29 Mar 2025 review stating Way too small
I was very disappointed that the bra was way too small. The cups size was ridiculous
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
F
Fannie E.
Verified Buyer
3.0 star rating
27/03/25
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Forme étrange
Review by Fannie E. on 27 Mar 2025 review stating Forme étrange
Forme pointue, taille petit. Ne me convenait pas.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
B
Beth B.
Verified Buyer
1.0 star rating
24/03/25
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Not much coverage
Review by Beth B. on 24 Mar 2025 review stating Not much coverage
Used to love this bra but the cup size has been reduced and does not provide enough coverage.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
L
LINDA M.
Verified Buyer
3.0 star rating
24/03/25
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Not for larger cup
Review by LINDA M. on 24 Mar 2025 review stating Not for larger cup
I really wanted to like this merino wool bra because I was searching for one to wear with a top that has an open back. But I didn't feel there was enough support and it wasn't flattering. I think it may work best for smaller cup sizes.
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
R
Raphaële G.
Verified Buyer
4.0 star rating
22/03/25
True to size:
It runs small
True to size
It runs big
True to size:
It runs small
True to size
It runs big
Une bonne brassière, mais serrée
Review by Raphaële G. on 22 Mar 2025 review stating Une bonne brassière, mais serrée
J'ai acheté une taille plus grande en me fiant aux commentaires et je la trouve encore serrée. Les ajustements des bretelles sont au plus large et j'ai quand même des marque dans les épaules à la fin de la journée. Il faut dire que je ne porte pas de soutien en général parce que je trouve cela inconfortable.
Le tissu est bien, assez doux...Read MoreRead more about J'ai acheté une taille plus grande en
Le tissu est bien, assez doux...Read MoreRead more about J'ai acheté une taille plus grande en
, pas transparent. Il sèche normalement. J'ai pris beige pour porter sous les autres chandails Icebreaker qui sont souvent transparent.
Après plusieurs essais, je la recommanderais quand même avec une taille plus grande.
Je fais 164cm, 128lb, 88cm de tour de poitrine. Je porte des chandail S, et j'ai acheté la brassière en M. Read LessRead less about J'ai acheté une taille plus grande en
On Merino Siren Bra - Women's|-|Soutien-gorge en mérinos Siren - Femme
Color:
Gritstone Heather
Size:
Include our
Lifetime Membership
for $34.99 to save 5%
This product is not eligible for returns. See our return policy for more details.
A sleek, modern-fit bra with our soft and stretchy corespun merino wool fabric, the Siren Bra is comfortable, supportive and breathable.
Features:
• Merino Corespun - durable merino blend regulates body temperature in all weather conditions
• Space to insert bra cups (bra cups not included)
• Low support
• Adjustable straps
• Slim Fit - A snug, close-to-body fit for low-bulk layering
Details:
• 83% Merino Wool/ 12% Nylon/ 5% Elastane, Exclusive of decoration
• Warmth system: 150 Ultralight
• Merino fiber micron: 18.9µ
• Care: Machine wash warm. Wash inside out with like colors. Do not use softeners. Fasten all closures to wash and dry. 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
