Breathability refers to a material's ability to allow water vapor (sweat) to pass from the inside to the outside, and is therefore a measure of its water vapor permeability.

Moisture-regulating refers to the property of a material to absorb excess moisture, store it, and release it again when needed to ensure a healthy, dry, and comfortable indoor climate or wearing comfort.

Compared to other materials, natural merino wool can be considered the material that keeps the air cleanest. This is due to the structure of the fiber, its antibacterial surface, and its self-cleaning effect. A comparison between merino and synthetic materials also shows that synthetics usually start to smell faster. A true marvel of nature! Nevertheless, it must be clear that wool absorbs moisture and is therefore less suitable for people who sweat heavily in intensive mode.

Quick-drying materials, which often contain synthetic fibers, do not absorb water as much, but instead wick it away from the skin. Synthetic materials such as Lyocell, polyester, and polyamide also dry faster than natural fibers because they repel moisture and do not absorb it as well.