Icebreaker  Siren Long Sleeve Sweetheart - Women's

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Sizing chart
Runs Small
Runs Slightly Small
True to Size
Runs Slightly Large
Runs Large

Past season

Soft & Stretchy

The Siren Sweetheart is a soft and stretchy women’s long sleeve t-shirt. It has a slim-fit and a sleek exterior design and is made with corespun merino wool fabric. Corespun technology incorporates merino wool fibres wrapped around a nylon core for added strength, stretch, and next-to-skin softness. This shirts' design also has a touch of Lycra®, for improved flexibility when worn during activities like travelling, hiking, and for days around the house.

  • 83% merino wool base layer
  • Corespun fabric for durability
  • Flattering neckline
  • Sleek design



  • [body] 83% merino wool, 12% nylon, 5% Lycra® corespun


  • Slim


  • Hip-length


  • 138g

Recommended Use

  • Base Layer

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