Water column from 1.500 mm
The ability to withstand water pressure without moisture penetrating into the material is given by the water column (mm). The minimum standard is a water column of 1,500 mm.
Breathable-Permeable to water vapour
Functional textiles must have the ability to transport moisture from the skin to the fabric surface as fast as possible. Permeability shows how much steam in grams can evaporate on a surface of 1 m2 within 24 hours. The higher this figure, the more breathable the textile is.