Lab Testable Attribute

09

0002

Breathability

The body constantly gives off warmth and moisture, even while resting. Ambient moisture and temperature levels are typically lower compared to the inside of the garment. Here, you have a partial pressure gradient between warmer, moister air inside and less moist, colder air outside. As a result, in its search for equilibrium, moisture moves through clothing to the exterior when you are active. This principle applies to every kind of apparel. Breathability defines the ability of a given fabric to allow moisture to escape (diffuse) to the outside, thereby allowing complete comfort.