Icebreaker Women's Original LS Half Zip

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The Original Half Zip is aptly named. First released in the original 1995 Icebreaker collection, this much-loved, versatile top is as popular as ever. It's at home in a wide range of environments, from the mountains to the sea, featuring stunning styling and ultra-functional features including the half zip for temperature control and thumb loops to keep in warmth when needed. Suited to cold conditions anywhere.


  • Regular fit
  • 100% Merino wool: soft merino fibres that regulate body temperature in all weather conditions and resists odours
  • Zip neck collar for temperature regulation
  • Back side seams prevent chafing
  • Thumb loops anchor sleeves for extra warmth
  • Highly breathable
  • Naturally odour resistant
  • Icebreaker tonal embroidered logo and pip label


Made From 100% Merino wool 20.9 micron

Merino wool is super lightweight, soft, non-itchy, non-clammy, warm in the cold and cool in the heat, and has a miraculous ability to resist odour. Because it was made in the mountains rather than in a petrochemical laboratory. It's naturally renewable, recyclable and biodegradable.

The smaller the micron, the finer the fibre, the softer it feels. The diameter of a Merino fibre is measured in microns – where one micron equals one millionth of a metre. Icebreaker's Merino fibres range from 15.5 to 23.5 microns to ensure a soft hand feel across our skin to outer layers. Finer fibres feel softer because they bend more easily when in contact with the skin.

  • Icebreaker next-to-skin layers: 15.5-18.5 micron
  • Icebreaker mid layers: 18.6-22.5 micron
  • Icebreaker outer layers: 22.6-23 micron
  • Synthetic fibres: 30 micron
  • Traditional wool fibre: 50 micron
  • Human hair: 70 micron

Machine wash with similar colours. Do not use softeners, do not use bleach. Dries fast in the shade, do not tumble dry. Do not dry clean. Exact instructions on the care label.


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