Model measurements
Height: 180cm / 5'9". Waist: 59cm / 23". Jess is wearing size S.
Women's Merino icebreaker Anniversary Original Long Sleeve Half Zip Top
Details
Product Actions
You can return icebreaker that you purchased directly from icebreaker.com as long as it is unworn, unwashed, and in the original packaging with tags attached. We have extended our returns period and this may be returned for a refund for any reason within 30 days from the ship date.
Loyalty members earn
4,999
points with this purchase.
- Features
- 100% Merino - Soft, lightweight and naturally odour resistant fibre that keeps you warm when it’s cold and cool when it’s warm
- Bodymapped performance knit structures for breathability
- Seam-free construction for comfort
- Coronet Stripe textural design on sleeve
- Special anniversary edition hang-tag
- Rib collar, sleeve cuffs and bottom hem
- Style
- #0A579E
- Product weight
- S= 600 g/21.17 oz
Mid Layers
- Fabric content
- 100% Merino wool. Exclusive of decoration
- Merino fiber micron
- Care
- Machine wash cold gentle cycle. Wash with like colors. Do not use softener. Close all fasteners before washing. Do not bleach. Do not tumble dry. Dry flat in the shade. Do not iron. Dry clean.
Our warmth system.
The bigger the number, the warmer you'll be.
When choosing your layers, consider in which conditions you plan to use the products, and let yourself be guided by our warmth system.
Our merino fiber measurement.
The smaller the micron,
the finer the fiber,
the softer it feels.
The diameter of a merino fiber is measured in microns – where one micron equals one millionth of a meter.
icebreaker’s merino fibers range from 15.5 – 23.5 microns to ensure a soft hand feel across our skin to outer layers. Finer fibers feel softer because they bend more easily when in contact with the skin.

- Model measurements
- Height: 180cm / 5'9". Waist: 59cm / 23". Jess is wearing size S.
- What's your size?
- See our Size Guide
Free of plastic microfibres and petrochemical-based synthetics, this product is made with 100% pure merino fibres that were hand-picked for strength and softness to create a luxurious fabric that naturally breathes and resists odours. Merino wool fibre is naturally renewable, recyclable and biodegradable under certain conditions.


Experience the evolution of a New Zealand icon with our timeless O-Zip, the original icebreaker 100% merino mid layer. Celebrating our 30th anniversary, the new O-Zip reimagines a brand classic with a new seamless structure, offering timeless comfort and modern performance.