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The world’s first and only 100% Yak performance fabric. Soft like cashmere, warmer and more breathable than merino, moisture wicking and odour resistant, this fabric is your ideal first layer for outdoor adventures.

Outstanding warmth-for- weight Yak wool inner layer has a terry loop construction

It takes moisture away from the skin to help you stay comfortable

Naturally odor-resistant, so you can wear it for days at a time and pack light

Soft and itch-free for more comfort

Natural stretch that flexes as you move

Durable for wearing under pack straps and harnesses

Machine wash at a cool temperature

Hima-Layer Original 230 vs. Merino

According to the tests carried out in independent laboratories, this fabric is weight-for-weight:

- 40% warmer - 66% more breathable - 17% faster at transporting water vapour away from the skin

Just like merino, it’s naturally odour-resistant, while its softness has been compared to cashmere. While merino sheep live at around 1,000 metres above sea level, yaks live in a more challenging environment. They endure hail, ice, wind and rain at 5000 - 6000 metres altitude.

Active-Use Testing

A study by Sheffield Hallam University’s Centre for Sport & Exercise Science has shown that when exercising in low temperatures, base layers made with Hima-Layer™ Original 230 maintain core body temperature better than synthetic or merino base layers. During the test, researchers measured the surface temperature of the test subjects' skin to see how much heat they were losing while running. The test subjects who wore yak wool lost an average of just -3.5˚C, compared to a -6˚C drop when wearing merino and -8˚C when wearing polyester.

The less energy you burn to stay warm, the more you can dedicate to movement. So if you plan to exercise in cold conditions, kora base layers are your best choice.

Exceptional. Cut to an athletic fit, this 100% Yak Wool layer is warm, quick drying, and comfortable