Icebreaker Women's Siren Long Sleeved Sweetheart Underwear

5.0 star rating 3 Reviews
Size Guide

We accept Afterpay and Zip ($100min/$1000max)


Why shop with us?

A year-round baselayer that excels in both cool and warm weather.

The Long Sleeved Siren is carefully crafted from a lightweight 150gm jersey merino wool and features a feminine sweetheart neckline, set-in sleeves and a small touch of LYCRA for added stretch comfort. The exceptionally breathable merino fabric naturally regulates your temperature and provides you with the appropriate insulation when it is cold, yet also cools you on a hot day. The unique odour resisting properties of merino are unrivalled, and you can wear your merino baselayer for days at a time without washing.

  • A lightweight 150gm merino wool (96%) and spandex (4%) blend offers maximum comfort & stretch.
  • The sweetheart neckline offers a feminine fit.
  • The merino wool naturally resists odour, regulates your temperature and efficiently manages moisture.
  • 134 g / 4.73 oz. Slim fit.