Women's Merino 150 Siren Bra
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Women's Merino 150 Siren Bra

CAD $65.00

CAD

Color: Gritstone Heather
Size:
See More Details
IB104708013-1

Women's Merino 150 Siren Bra

CAD $65.00

CAD

Details

Our best-selling bra with a comfortable and lightly supportive fit, the Siren Bra features our 150gm jersey corespun fabric, which uses merino wool fibers wrapped around a nylon core for added strength and durability, while retaining next-to-skin softness. We've added a touch of LYCRA® for active stretch. The Siren’s sleek design and no-side-seam construction is perfect for everyday comfort and easy layering, while its thin adjustable elastic straps make for a barely-there feel.
Features & Details
  • Best for low impact activities
  • Merino Corespun - merino blend regulates body temperature in all weather conditions
  • Flatlock seams to help reduce friction
  • Low support
  • Adjustable straps
  • Removable Cups
  • Style IB104708013
  • Product weight Medium = 172 g / 6.06 oz

Good for:

  • Everyday
Fabric & care
Fabric content

83% Merino Wool/ 12% Nylon/ 5% Elastane, Exclusive of decoration

Warmth system: 150
  1. 75
  2. 150
  3. 200
  4. 260
  5. 300
  6. 460+
Merino fiber micron: 18.9µ
  1. 15.5µ
  2. 16.75µ
  3. 18.9
  4. 19.25µ
  5. 20.5µ
  6. 21.75µ
  7. 23.0µ
  8. 25.5µ
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 and accessories. Do not dry clean.

Fit & sizing

Fit

Slim

What is Merino?
Merino is super lightweight, soft, non-itchy, non-clammy, warm in the cold and cool in the heat, and has a miraculous ability to resist odour. Because it was made in the mountains rather than in a petrochemical laboratory. Merino wool fibre is naturally renewable, recyclable and biodegradable
Delivery & Returns

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Overall rating: 4.4457545 / 5 from 1272 reviews.

AI Generated Review Summary

The Women's Merino 150 Siren Bra is praised for its soft, breathable fabric and comfortable fit. While opinions vary on the padding, cups, straps, and band, the overall consensus is that it provides a good and comfortable fit. Customers also appreciate the bra's beautiful color and adjustability.

Summary topics

  • Feel (6%): Customers expressed appreciation for the feel of the bra, describing it as soft, comfortable, and amazing.
  • Fabric (8%): Customers raved about the fabric, describing it as soft, breathable, and comfortable.
  • Colour (5%): Customers loved the color of the bra, describing it as beautiful, lovely, and heavenly.
  • Fit (25%): Based on a significant number of customers, the general consensus is that the fit is good and comfortable.

Review topics: ["fit","size","delivery","price","weight","quality","feel","problem","looks","material","band","bra","fabric","straps","padding","support","wear","comfort","shape","cups","medium","design","weather","colour","style","top","layer","buy","model","construction"].

Review highlights

  • "Straps, cups and band are all very soft and comfortable." — Kayaker76
  • "The cups are perfect, the fit feels supportive but with a natural feel." — DerbyHills
  • "Great comforting fit, with good support and soft feel on the skin" — WooleyComfort

Reviews

Inconsistent Quality

"Purchased two of these bras in May of 2026 and have worn each no more than ten times. I've washed by hand and hung to dry. Already, the elastic band is showing signs of wear with the elastic kinda breaking apart in the gray one (black one looks fine). Very disappointed in the quality. Bought a medium and I am 4'11"/110 lbs."

— Liz (2/5)

A Merino bra that delivers in all areas!

"Finding a merino bra that has a good fit and that is also comfortable has been a challenge but this 150 Siren bra delivers well in all areas. The fit is nice with good coverage and adjustable shoulder straps. It has low/medium support which is what I was looking for in this type of bra. My only suggestion where it has room for improvement is the removable pads. I do like the option to have pads that are removable, however the pads that come with this bra have an awkward texture/shape to me that doesn’t give a smooth look. So I will most likely be wearing without the pads or replacing with a different set of pads. Overall I’m very pleased with this bra and would recommend."

— Valerie (5/5)

Very comfortable from the get go

"The sizing chart made getting the right fit easy. My recommended size medium is snug under the bust without being tight and I forget I am wearing it. I like the front positioned strap adjustment. The plunge style does offer a challenge in keeping things in place when active. I took away one star for this."

— AJD (4/5)

Great wool bra, pads don't work

"I've bought these bras for years and like the wool. I put up with the wrinkly top of the cup area and wish that would get fixed. But I can't use the padded inserts. I'm 34 AA/AAA and they are too big and round for my breasts. I like a pad sometimes so use ones from a bathing suit that are lighter and smaller. Others have commented on this too - please consider a redesign! And for reference I find the Small to be the right size for me given the 34" band. Last comment to Icebreaker - consider sewing all the labels on with separate thread, as you do for the underwear! It's easy to cut that thread and remove the whole label on the underwear without having all the extra in the seam, as there is on the bra, and for that matter, the t-shirts. We all get rid of the labels - make it easier for all the clothes, since you do it for underwear!"

— Pat (4/5)

So nice for ibtc members

"I love it but it’s not quite as comfy as the siren cami. I absolutely adore the built in cups-they actually work really well snd stay put. Overall its not super supportive but good for the ibtc. Wish there were more bold colors. I am ordering 2 more."

— Michelle R. (5/5)

Love it

"I love it ! It is very comfortable.. i already had black ones and they stay in great condition as time goes by. Machine wash and hang up to dry is easy maintenance."

— Slime (5/5)

Une base qui ne se démode pas

"Toujours aussi confortable. Les sous vêtements mérinos sont une première première couche parfaite été comme hiver. Le choix de couleurs varie selon les saisons, parfait pour ajouter à ma collection."

— M (5/5)

Hard to resist

"Very nice design! For a lot of tank top, this time just look invisible! Surprisingly easy to wear! was a bit worried it will not be that supportive~ but now I am very tempted to just collect multiple sets of this item!!! and it's underwear!!!"

— Sera (5/5)

Comfy

"Great for hot weather and hot flashes. Pack for recent road trip. Dried fast. Nude color great for white tops. Very comfy."

— TreeYoga (5/5)

Great everyday bra

"I have several of these bras and they are great! I’m a huge fan of wool and they are my every day work bras. Fairly comfortable and low profile, don’t make me feel smashed like sports bras. You can wear them multiple times between washes. I bought this one because all my others were black and needed a nude color under a bridesmaids dress."

— Hannah H. (5/5)

Q&A