please select a Color
please select a Size
Choose a shipping method

Members get an estimated $3.00 back on this item as part of their .

Cozy, breathable and soft, the Icebreaker Siren thong underwear offer moisture-wicking, itch-free merino wool fabric in a modern fit.

  • 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
    • Side seams are slightly frontward to lend simple, chafe-free comfort during both active and casual wear
    • Lightweight, breathable fabric resists odors naturally
    • Fabric blend also wicks moisture and dries quickly


    View all Icebreaker Women's Briefs
  • Technical Specs

    Best Use



    Underwear Style



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

    Moisture Wicking


    Quick Drying




  • Size Chart

    XS S M L XL
    Numerical Size 0-2 4-6 8-10 12-14 16-18
    Bust 32.25 34.25 37 39.25 42
    Waist 25.25 27.5 30 32.25 35
    Hip 35.5 37.75 40 42 44.5

    Sizing Notes

    Measurements are stated in inches unless otherwise indicated.

    CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

  • Reviews

    Loading Reviews...
  • Questions & Answers

    Loading Questions...