Keep it long, treasure it long.

Comfortable, highly functional, secure

An Icebreaker siren short sleeve that feels good against the skin and is thin yet has excellent heat retention and humidity control. Uses highly functional merino wool. It is warm in winter and cool in summer, and it does not have the tingling sensation peculiar to wool, so it is a material that even those who are not good at wool should try. It fits nicely on your body and is designed to be worn as an inner or even a single piece.

Merino wool has four main characteristics

1. Soft touch
Merino wool is the world's highest quality super microfiber with a thickness of 17 to 19 microns. The fiber is very fine, thin and soft and gentle on the skin, so it does not have the tingling sensation of ordinary wool.

2. Excellent breathability / humidity control
Since the fiber itself has high hygroscopicity, it absorbs the water vapor generated by the body from the stage before sweating and dissipates it into the atmosphere. The sweat that you have been exercising is sucked up and vaporized by capillarity, so your skin is always kept dry and comfortable.

3. Ideal temperature control
When it is cold, when it absorbs the moisture on the surface of the skin, the heat of adsorption and body temperature are stored in the many air pockets created by the ultrafine fibers to keep it warm. On the other hand, when it is hot, the body temperature can be adjusted to a comfortable level by gradual evaporative cooling by evaporation of sweat.

4. Natural antibacterial and deodorant effect
Sweat contains a mixture of fat and salt, which promotes the growth of germs and is also a source of unpleasant odors. Merino wool has the property that germs do not easily adhere to it, and it is a material that does not easily generate odors.

Everyone wants to choose stress-free materials for clothing that comes into direct contact with the skin. Merino wool is a versatile material that can be worn comfortably throughout the year.

Easy to use

Merino wool is easy to clean. It does not require hand washing or fabric softener like regular wool and can be machine washed with regular mild alkaline detergents. It can be used cleanly at any time by regular washing in the washing machine, and washing also has the effect of restoring the fabric. The reason for its ease of use is that it does not easily wrinkle and returns to its original shape without an iron. It is also convenient for traveling.

Merino wool is a material with a high UV shielding rate. Even the lightest color of Icebreaker has a UPF (ultraviolet protection index) of 15 or more, and even neutral colors have an effect of UPF of 50 or more. It is also recommended for those who have a lot of sports outside. It's not a tight fit that sticks to your body, but it has elasticity and a certain amount of space, so you can wear it comfortably. It features moderately long sleeves that do not curl up even when actively moving, and has a silhouette that fits the Japanese body shape.

The opportunity was the encounter with merino wool

Icebreaker founded in 1994. It all started when the founder, JEREMY MOON, introduced her lover and met a merino sheep farmer. JEREMY MOON has been kayaking for a long time and was fed up with the breathability and unique odors of outdoor clothing at the time. At that time, chemical fibers were the mainstream of outdoor wear, and few people were interested in merino wool, but the 100% merino wool T-shirts handed over by farmers are light, soft and breathable, and smell. I learned about the characteristics of merino wool, which is hard to stick to, and I started to want to make stress-free clothing for playing various sports. The company I was working for at that time quit and started using my savings to make a total of 5 types of tops 4 types including T-shirts and leggings 1 type with a loan from a bank.

The raw material for the Icebreaker is the raw wool of Merino sheep raised at an altitude of 1,800 m in the Southern Alps of New Zealand. A merino sheep that lives in harsh highlands where the temperature changes drastically. In the summer when the temperature reaches 35 degrees Celsius, the high breathability of fine wool keeps the sheep's body temperature appropriate, and in the winter the thick wool layer is -20 degrees Celsius. It protects the sheep's body from the cold. Merino wool with high functionality created by such nature. It's not the latest technical textiles and oils, but the power of grass and water, and the nature itself created by the sun. Since it is biodegradable and can be regenerated, it realizes sustainable manufacturing.