Polartec's new Delta Cooling fabric is inspired by car radiators

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Polartec, a brand best known for its fleece and technical jackets, has now entered the world of warm-weather fabrics with it’s Delta Cooling fabric.

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While things like Coldblack treatment and Castelli’s Prosecco Ice and Strada fabrics have been around for a while, Delta's new cooling fabric utilises construction rather than treatments to work its cooling magic.

Polartec's Delta Cooling technique is similar to Castelli’s Prosecco fabrics, which use a hydrophilic treatment to spread water droplets over a larger surface area in order to promote evaporation and cooling. The difference is that Castelli’s fabric relies on a treatment that can wash out over time, whereas Polartec says the Delta Cooling fabric's action is mechanical, permanent, and totally chemical free.

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Polartec says because the fabric holds moisture off the skin it reduces that nasty clinging feeling of a wet jersey that often leads to chafing and helps with odour control too

According to Polartec the new fabric was inspired by the car radiator and is made using a mix of Tencel, a fibre derived from wood pulp known for its hydrophilic (moisture absorbing) properties, and polyester, which is known for its hydrophobic (moisture repelling) properties.

The fibres are woven together in such a way that they quickly wick moisture away from the skin, but hold the moisture in the fabrics outer layer to promote cooling and let the fabric breath.

Radiating fabrics

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