Merino fibres contain the air heated by our body so that it does not disappear into the environment. Similar to a microscopic version of the onion principle, merino fibres keep the body warm. It is astonishing that merino wool retains its warming properties even in wet conditions. Merino wool can absorb about a third of its own weight in water without being noticeable. This capability is advantageous not only on hot days, but also at cold temperatures. Water vapour is absorbed inside the fibres, while the surface of the fibres repels water, such as raindrops. The merino wool still feels warm and provides a pleasant wearing comfort as the material is dry on the outside.
Our body constantly releases heat to the surrounding air and cools down in this way. We'll begin with freezing. This heat loss prevents the wearing of merino wool garments.
The moisture contained in the fabric creates absorption heat, an exothermic process. The molecules of the fibres collide with the water molecules, producing energy in the form of heat. This released energy can increase the temperature of the merino tissue by up to 10°.
It’s cold and you got into the rain? It’s no big deal. Wait a few minutes and then grab your rain jacket, Prosa merino clothing will keep you warm.