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Icebreaker - Siren Bra - Women's

Icebreaker Siren Bra - Women's

35% Off
$32.50 Original price:$50.00
Changing the size selection, or changing the selected color after selecting a size, may change the associated price

Item #ICE00HI

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Size:

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Tech Specs

Responsible Collection:
Responsibly Sourced
Material:
83% merino wool, 12% nylon, 5% Lycra
Support:
low-impact
Anti-Odor:
natural attribute of merino wool
Claimed Weight:
1lb 4.1oz
Recommended Use:
casual, hiking, yoga
Manufacturer Warranty:
1 year

Why We Like The Siren Bra

Our favorite everyday, go-to bra, the Icebreaker Siren Bra lets us enjoy the next-to-skin comfort of merino wool, with a sleek design and supportive, modern fit.

  • Most-requested Icebreaker bra for comfort in everyday wear
  • Merino wool fibers naturally repel unwanted odors for fresh comfort
  • Nylon core fibers enhance strength and durability for extended wear
  • Lycra content provides active stretch for comfort through the day
  • Breathable construction allows comfortable wear during adventures
  • No-side-seam construction enables comfortable, everyday layering
  • Thin adjustable straps allow you to easily fine-tune the fit

Tight elastic

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: medium

There's not much give in the elastic. It's a tight squeeze around the ribs. I ended up ordering up a size, but I think it will work out ok.

boob fly out

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: m

felt tight in the band and uncomfortable. shape of cups is such that if i'm working out my boobs pop out. this is repeated in other reviews. i wish i had read them. not comfortable, fabric doesn't feel quality. not recommended.

Comfy and flattering bra

  • Familiarity: I've used it several times
  • Fit: True to size

This bra feels more luxurious than any 'lingerie' company bra. The fit is nice and snug and support is great for every day or even a run if you have a smaller cup-size. The off-white color is feminine and very flattering. Surprisingly sexy!

It does get occasionally itchy being wool, but I can get several wears before needing to wash. Definitely hang dry to keep it from pilling or shrinking.

I do wish it were more seamless under clothes. There is a pocket at the top of the cups, visible over clothes, that imply you might be able to add removeable cups to it, but the triangle shape would definitely not fit standard round insertable cups. I'm wondering if Icebreaker makes cups to add that would smooth out the fabric and make it more no-show.

Overall a lovely and functional bra.

Quite snug

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: M

The elastic band is thick and feels tight. The cups are small. I'm not overly endowed and, according to the size chart a medium should be my size, but I'm spilling out of the cups and it is not a flattering look under a fitted t-shirt. I'd definitely order a size up if I had it to do over again. Maybe I'd like it better. I guess the other option would be to lose 10 or 15 pounds.

Just WOW

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Small

Love this bra so much. They are not kidding when they market it as wool with sex appeal, yowza! Super flattering fit, does NOT look like a sports bra. Sounds vain, but it makes you look really hot. It's incredibly comfortable you barely notice you're wearing anything. I normally hate getting into sports bras but the Siren has just enough stretch that it isn't uncomfortable to pull on. It didn't absorb any odors. I tossed it in the laundry machine and it didn't fall apart or pill. I'm a B cup and the small was plenty supportive for casual/low impact activity. Looks great with the Siren Sweetheart top. Icebreaker is dangerous for my wallet...

I need more of these!

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: small

I'm a bike commuter, and I've started converting as much of my wardrobe to wool as possible for its sweat wicking, non-smelly, and temperature regulating properties. I was very skeptical of this bra when I ordered it, but I'm so glad I took a chance on it! I'm pretty small chested, so I don't have to worry about as much support as some women, but I definitely want some support when I'm hitting bumps and going over railroad tracks at 20mph on my ebike. This bra delivers! It's so comfortable I forget I'm wearing it. It's so soft and never itchy. I did end up purchasing swimsuit or "modesty" inserts from Amazon for the pockets in the cups... I'm wearing this bra under my clothes at work, so I needed some coverage there.

I ended up getting a second bra and I wish I had more so I could live in them permanently.

I LOVE THIS BRA

  • Familiarity: I've used it several times
  • Fit: True to size

So cute and comfortable! I was looking for a moisture wicking, odor resistant merino wool sports bra that didn't cause uniboob and this is the one. I highly recommend this bra! It's great for working out, and casually.

I hate bras, but I love this product!

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: Medium

I just put this bra on and I'm already psyched on it! I am a 36A-B and I ordered the Medium since I always feel like things are tight around my rib cage. I ordered this bra because I'll be doing a lot of backpacking this summer and I just wanted a quality item that isn't just a polyester sports bra that smushes instead of supports! Granted, it is a casual fit, and I could understand if you need more support that this may not be a great bra for high activity days, but for me it's perfect.

I relate to some of the other reviews, as I have always hated wearing bras - mostly because they just never fit right and sports bras have never been super flattering, supportive, or comfortable for me. This has been the best thing I've put on my body in a long time. The Dusk color is also beautiful, so it makes me feel GOOD to be wearing something that looks nice and isn't just a classic black sports bra.

Thanks Ice Breaker for an AWESOME product!

Not good for pretty much anything

  • Familiarity: I've used it several times
  • Fit: True to size

This bra does not provide enough support for even walking. I wore it on a backpacking trip and it's good I was just with my fiancee, because the sisters were jiggling with every single step. And it's not like they're huge either --I am a 34 C (got a Medium), which is about as close as you can get to the middle of the road. So this bra is basically only good for lounging, but it's less comfortable on the skin than my $10 Hanes lounge bra. So what's the point?

Hey Melinda,

Really sorry to hear you were not a fan of the Siren Bra! It's one of Icebreaker's customer favorites and has been well regarded for years. That said, we recognize every body type & preference is different. Thus if willing, reach out to your Gearhead to discuss how to work a swap for the Sprite Racerback Bra. This has a bit more support for your backpacking trips and is super comfy for daily wear (my wife's favorite).

Cheers,
Jeff
Icebreaker Customer Support

Comfy

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: s

I have to start out by saying that I love all things Icebreaker and this is no exception. Comfy and functional but more fitted and flattering than a sports bra. It has places for pad inserts which hold tight. Great for traveling as easy to use hiking etc as well as out in the evening and easy to hand wash and hang dry.

Comfortable Flattering Supportive Bra

    I just got this and can tell its going to be my new favorite casual bra. Its supportive and comfortable enough to last through the day and on light walks. I love how it fits, the material, and the cut. It will work under a large variety of necklines and shirt cuts. I love it!

    Comfort x100

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Small

    I refuse to wear regular bras, always opting for the most comfortable options but typically struggling to find the perfect bra to fit the bill. This one does just that. Its the perfect blend of comfort and practicality while maintaining a feminine look that works well under many different types of tops. It has become something I wear daily. I will definitely be purchasing more of these.

    Hi there Casey Sandala,
    Thank you very much for taking the time to review your Icebreaker Women's Siren Bra. We are so glad this is just the right bra for you. We love that it doesn't have any unnecessary frills and can truly be worn for multiple activities/every day life. If you ever need any questions answered about any Icebreaker product information, please contact your Gearhead, as they are the best source of information for your outdoor gear needs!
    Have a great afternoon,
    Sydney Lambert
    Icebreaker Customer Support

    Changed my life

    • Familiarity: I've used it several times
    • Fit: Runs small
    • Size Bought: XS

    I have always hated bras. As a small chested person I opt for the most anti-bra bras I can find, so I have been wearing sports bras or bralettes and going braless for years. This bra has no wires, padding, or clasps, and yet it still offers support and a really flattering shape. I have been smashing my boobs against my chest with ugly bralettes for so long that I forgot what they are supposed to look like. I love the cut and feel of this bra and the wool makes it so I almost never have to wash it. I will say if you find it itchy at first, give it a few days. My skin got used to it around day 3 of wear, and now it is absolutely my favorite bra. Thank you Icebreaker and please never stop making this!

    Hi there Rachel G,
    Thank you very much for taking the time to review your Icebreaker Women's Siren Bra. We are so glad you are loving this piece. We agree - old bralettes be darned! We love that this feels like a 'bra' but is supportive like a light athletic bra. We promise to keep this one in the line - trust us, it is a go-to for all the ladies at Icebreaker! If you ever need any questions answered about any Icebreaker product information, please contact your Gearhead, as they are the best source of information for your outdoor gear needs!
    Have a great afternoon,
    Sydney Lambert
    Icebreaker Customer Support

    Wool never looked so good!

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Small

    This bra was one of my favorite purchases. It is comfy, soft and keeps me feeling supported. Icebreaker thought of more than just function with this piece. It also has a flare of fashion. The cut is very flattering and can be worn under a vneck style shirt.

    Wool delight

      I am a firm believer in all things wool. This bralette is no exception. I am 34c and got size M which is just so comfy. If i had larger boobs i dont think this would support very well, but for my boobs i can wear this hiking, around town, in dresses etc. I wouldnt go bouncing on a trampoline and expect super support but i love it for less active activities. climbing, walking, hiking, biking, loafing, working, ooooo, its just so comfy. No itchy tags or cumbersome clasps. Like wool, after excessive use it doesnt stink.

      Hi Ingrid,
      Thanks so much for taking the time to review your Icebreaker Siren Bra. We are so pleased you're a merino lover and that this bra is doing all it was designed to do! Our favorite feature is the no-stink aspect as well. Please reach out to the Gearhead team if you ever have any Icebreaker questions, they are all experts.
      Have a great day and thanks again,
      Sydney Lambert
      Icebreaker Merino

      Super Comfortable

        The fabric on this bra is great! It is very comfortable and stays in place. I feel that I usually have to adjust or move around my straps but have had no problems with this

        great material

          I love the material but the cups just are not flattering

          Super comfortable

            This is very comfortable for a casual bra. I only dropped it down a star because I think that it gets a bit hot in summer months.

            Not a great fit

            • Familiarity: I returned this product before using it
            • Fit: Runs large
            • Size Bought: Medium

            I have a couple of the Siren sports bras and love them, so I gave this one a shot. Bought the same size (M--I'm a 36C) and while this fit fine in the band, the cups were no bueno. There was extra fabric puckered up at the top by the straps, like the cups were too big. Did not like. :/

            Hey Cynthia,
            Sorry to hear that this bra wasn't just right for you. Not sure if you're still in the market for a great bra, but the Sprite Racebrack or the Tiki bra are both great options. Happy to answer any questions regarding fit!
            Sydney

            Simply Wonderful

              Simple design, easily adjustable and I love the wool blend fabric. Way comfortable.

              Icebreaker

              Women's Apparel
              Tops & Bottoms
               XSSMLXL
              Bust

              30 - 32in

              (76 - 82cm)

              32 - 34in

              (82 - 88cm)

              34 - 37in

              (88 - 94cm)

              37 - 40in

              (94 - 100cm)

              40 - 42in

              (100 - 107cm)

              Arm Length

              30.25 - 30.5in

              (77 - 77.5cm)

              30.5 - 30.75in

              (77.5 - 78cm)

              30.75 - 31in

              (78 - 78.5cm)

              31 - 31.25in

              (78.5 - 79cm)

              31.25 - 31.5in

              (79 - 79.5cm)

              Waist

              24 - 26in

              (58 - 64cm)

              26 - 28in

              (64 - 70cm)

              28 - 30in

              (70 - 76cm)

              30 - 32in

              (76 - 82cm)

              32 - 35in

              (82 - 89cm)

              Hip

              34 - 36in

              (84 - 90cm)

              36 - 38in

              (90 - 96cm)

              38 - 40in

              (96 - 102cm)

              40 - 42in

              (102 - 107cm)

              42 - 44in

              (107 - 113cm)

              Woven Bottoms
               272829303132
              Waist

              26 - 27in

              (64 - 67cm)

              27 - 28in

              (67 - 70cm)

              28 - 29in

              (70 - 73cm)

              29 - 30in

              (73 - 76cm)

              30 - 31in

              (76 - 79cm)

              31 - 32in

              (79 - 82cm)

              Hip

              36 - 37in

              (90 - 93cm)

              37 - 38in

              (93 - 96cm)

              38 - 39in

              (96 - 99cm)

              39 - 40in

              (99 - 102cm)

              40 - 41in

              (102 - 104.5cm)

              41 - 42in

              (104.5 - 107cm)

              How to Measure:
              For best results, take measurements over your underwear.
              Bust:
              Measure under your arms around the fullest part of your chest.
              Arm Length:
              Measure from the back of your neck to the top of your shoulders, to your elbow and down to your wrist bone.
              Waist:
              Place the measuring tape at your natural waist, the narrowest part of your torso.
              Hip:
              Place the measuring tape around the fullest point on your hips.