If you are not satisfied with the Products you received or have simply changed your mind about purchasing them after we have e-mailed you your Order Confirmation, you can return them within 30 calendar days of delivery of the Products and get a refund, provided that you return the Products to us according to the procedure indicated on our returns process page.
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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% LYCRA®
- 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.
- 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.