Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Icebreaker - Siren Bra - Women's - Black/Black
  • Icebreaker - Siren Bra - Women's - Black/Snow/Stripe
  • Icebreaker - Siren Bra - Women's - Glow/Stripe
  • Icebreaker - Siren Bra - Women's - Tulip/Tulip

Current Color

  • Icebreaker - Siren Bra - Women's - Black/Black
  • Icebreaker - Siren Bra - Women's - Black/Snow/Stripe
  • Icebreaker - Siren Bra - Women's - Glow/Stripe
  • Icebreaker - Siren Bra - Women's - Tulip/Tulip

Icebreaker Siren Bra - Women's


Free 2-Day shipping on orders over $50*

Select a Size:

Select options
  • Select options
    • XS
    • M
    • L
    • XL

    Select a Color:

    Select options
  • Select options
    • Black/Black
    • Black/Snow/Stripe
    • Glow/Stripe
    • Tulip/Tulip

    10 Reviews



    While its name might provoke memories of your high school English class and its devotion to Greek literature, the Icebreaker Women's Siren Bra is far from dangerous but is decidedly beautiful. Crafted with a forgiving and breathable merino wool blended fabric, this lightweight bra is ideal for everyday use and ultimately offers paramount comfort with its no-side-seam construction while the adjustable straps make fine-tuning your fit a breeze. 

    • Moisture-wicking
    • Quick-drying
    • Adjustable straps
    • Item #ICE00HI

    Tech Specs

    83% merino, 12% nylon, 5% lycra
    yes, natural attribute of merino wool
    Recommended Use
    casual, fitness
    Manufacturer Warranty
    1 year

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    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. :/

    Form and Function.

    • Familiarity: I've put it through the wringer

    This was purchased for a multi-month backpacking trip on foot in hostels and camping. It was my favorite one. The fit is nice as it still gives you some form as opposed to a shelf bra. I ordered a small that fit well and I'm a 36A/34B. I washed it when I could but never had a problem with it. It was comfortable even with my pack on for hours. I was comfortable during fly fishing and chopping wood too, no restrictions. I never felt it was too thin to nip out through cloths either. I bought it in black.

    I Love It

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

    I had two of these bras for a two month backpacking trip and they worked wonderfully. They don't get as stinky as regular bras, because of the wool, and they fit really well. They are also so comfortable you forget you're wearing them. Being a huge fan of comfort means that was very important to me.

    Nice bra-- good to find one that's wool

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

    I originally ordered this bra in a size Small, as I'm right on the edge of small and medium (I'm a 34B, with a 35- 36 inch bust). It was too small-- the band was very tight and I felt like I was spilling out of the cups a bit. Returned it for a medium, which fits MUCH better-- but I really don't like the very wide, tight chest band. I will be removing it and replacing it with a 1/4" wide elastic, and then the bra will be perfect for me.

    I do really like that this bra is a pullover-- no uncomfortable, narrow, poky hook-and-eye thing in the back-- and that its design leaves the center of your chest entirely exposed-- it's much cooler than a sports bra because of that.

    hot as balls...

    • Familiarity: I've used it several times

    I bought this for sleeping in my insanely hot apartment. It's wonderful. It's comfortable enough for sleeping and stays very cool throughout the night. My only qualm is with the cup size. I'm a 38 C and the XL fits my back and shoulders very well but, I get a little double boob. Be warned.