icebreaker merino wool clothing is comfortable and versatile for everyday wear and adventures near and far. Made from the finest merino wool, our men’s tops are naturally odor-resistant and regulate your body temperature, keeping you cool in the heat and warm in the cold. Our sustainably sourced collections include base layers, T-shirts, sweaters and activewear. Wear our base layers as thermals to stay warm in the most extreme weather conditions. And pair our shirts with our range of men’s pants for style and comfort on the commute, at work and for laidback living.
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icebreaker weighting system. The larger the number the warmer the garment.
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The bigger the number, the warmer you'll be.

From summer heat to winter chill, there's a fabric weight to keep you in your comfort zone.

320 - 380 Heavyweight - Built to keep out the coldest conditions.

240 - 280 Midweight - Best suited for cold conditions.

200 - 230 Lightweight - Best suited for moderate to cool conditions.

150 - 180 Ultralight - Versatile all season performance.

120 - 135 Featherweight - Best for warm to hot conditions.