We have extended our returns period to 90 days coming up to Christmas. You can return items purchased directly from icebreaker.com for any reason within 90 days from the ship date as long as they are unworn, unwashed, and in the original packaging with the tags still attached.
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- Merino Corespun - durable merino blend regulates body temperature in all weather conditions.
- Product weight
- Small= 77 g / 2.71 oz
- Fabric content
- 83% Merino Wool, 12% Nylon, 5% Elastane
- Machine wash warm. Wash inside out with like colors. Do not use softeners. Fasten all closures to wash and dry. Do not bleach. Do not tumble dry. Line dry in shade. Warm iron. Do not iron print, trims and accessories. Do not dry clean.
Our fabric numbering system.
The bigger the number, the warmer you'll be.
Choose your comfort level with our fabric weight numbering system. The numbers represent the fabric's weight in grams per meter2.
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: 178cm / 5'10". Waist: 66cm / 26". Alicia is wearing size S.
- Key product measurements
- Back High Point Shoulder to Hem: 64.9cm based on size M
- What's your size?
- See our Size Guide
The Siren is a lightweight next-to-skin layer. It’s crafted from 150gm merino jersey corespun fabric that’s lighter than most other fabrics we use, and is made with a snug, slim fit that works perfectly as a cosy piece beneath your other layers. Our Siren tees fit tighter than other tees in our range, just size up if you like a looser fit.
With Corespun we wrap our superfine merino fiber around a nylon core to create a durable fabric that retains icebreaker’s signature softness, odour resistance and performance.