One more reason to like Merino wool fibers over synthetic

Mar 31, 2013

One more reason why Pure Lifestyle has adopted a natural approach to our athletic clothing and City Park Runners is the place to get it!! Read below why you should be wearing it as well.

Icebreaker merino keeps you warm in the cold, cool in the heat, and dry all year round. How does it control temperature and manage sweat?

Sweat management

Icebreaker merino fibres have a hydrophilic (water-holding) inside and a hydrophobic (water-repelling) outside. So they can absorb or repel moisture, keeping you:

• Dry, whether you’re caught in the rain or sweating from working out. Icebreaker merino can hold up to 35% of its own weight in water without feeling damp – unlike most synthetics, which can absorb only 5% of their own weight in water before they start to feel wet.

• Warm in cold weather, using a process called “heat of sorption”.

• Cool in warm weather, by absorbing and releasing moisture before it turns into sweat.

Unlike synthetics, merino is an active fibre that works to keep your body at its ideal temperature – whatever the weather. It’s more breathable than synthetics and cotton, which prevents clamminess and overheating.

Warm in the cold

When merino fibre absorbs moisture from the surrounding environment, it releases heat. This process is called heat of sorption, a natural process triggered when water molecules interact with the fibre’s internal chemical structure.

Other fibres also release heat of sorption, but merino does it four times as much as nylon and at least twice as much as polyester.

An electric blanket would take eight hours to produce the heat generated by a kilogram of merino. That’s why merino is the perfect fabric to wear when it’s cold and wet – you’ll feel chilly and clammy in synthetics and cotton, but warm and dry in merino.

Layers of Icebreaker merino lock together like a single lightweight garment, keeping the body at its ideal temperature. Merino’s breathability means you’ll avoid clamminess and overheating.

Cool in the heat

In hot weather, Icebreaker merino acts as the body’s air conditioner.

We lower our temperature by sweat evaporation. Clothes can interfere with this natural cooling process by trapping sweat next to the skin. But merino absorbs and releases moisture from the skin before it turns into sweat, keeping you feeling cool, dry and comfortable.


• Icebreaker merino has a hydrophilic (water holding) interior and a hydrophobic (water repelling) exterior, which means it can absorb or repel moisture depending on the conditions.

• It can absorb up to 35% of its own weight in moisture without feeling damp (synthetics can manage less than 5%). You stay dry and comfortable, whether you’re working out at the gym or caught in the rain.

• In cold weather, merino generates heat from moisture absorbed from the air.

• In warm weather, merino absorbs and releases moisture from the skin before it turns into sweat, keeping you cool and dry.

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