Icebreaker Siren Bra

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A soft, supportive bra made with Icebreaker merino wool jersey core-spun fabric, the Siren bra offers light support and excellent comfort all day, every day.

  • Features

    • Core-spun fabric features soft merino wool fibers wrapped around a nylon core for added strength and durability, while retaining next-to-skin softness
    • Lightweight yet durable and breathable fabric resists odors naturally
    • Fabric blend also wicks moisture and dries quickly


    View all Icebreaker Women's Sports Bras
  • Technical Specs

    Best Use




    83% merino wool/12% nylon/5% Lycra spandex

    Bra Support

    Low Impact

    Support Style


    Strap Type

    Tank Top

    Adjustable Straps




  • Size Chart

    XS S M L XL
    Chest or Bust 30 - 32 32 - 34 34 - 37 37 - 40 40 - 42

    Sizing Notes

    Measurements are stated in inches unless otherwise indicated.

  • Reviews
    752 reviews with an average rating of 4.4 out of 5 stars

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