Wool is the most hygroscopic natural fiber, being able to absorb vapor up to a third of its weight without feeling wet. This is because the wool fiber is composed of amino acids which can attract water and bind the water molecules in the structure of the fiber itself. Wool can therefore activate a process of transpiration, temporarily absorbing excess humidity and slowly giving it back to the environment. But the best hallmark of wool is its high thermal insulation which keeps the body cool when the temperature is high outside and hot when the departure is low. It also helps absorb and expel body moisture which also help maintaining a constant body temperature. Wool is also fireproof, water-repellent, is not subject to mold and does not produce elettrostatic charges. It is an environmentally friendly and recyclable fiber that can be washed and reused multiple times.