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Get any outfit off to a great start anytime of the year with the Icebreaker Women's Long-Sleeve Siren Crew.  Ultralight merino wool adds breathable warmth under your sweaters and activewear in the winter, and is remarkably cool and comfortable when worn alone in warm weather. A touch of Lycra gives it a figure-hugging fit and comfortable stretch, and it's naturally antimicrobial to resist odors.

  • Merino wool and Lycra blended fabric
  • Naturally antimicrobial
  • Slim fit

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Here's what others have to say...


Not just a long undie

  • Familiarity:I've used it several times

Not much to say, other than, it's a perfect, multi-purpose shirt, like all Icebreaker products. Love the magenta stripes, not too pinkish, but unmistakably feminine albeit the crew neck. I use it for work when casual business attires is not required, and for running. Fit is pretty slim, but I can wear it over a short sleeve shirt in the frigid office no problem - it has a small amount of lycra. Fabric seems to be even softer than other Icebreaker shirts.