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.

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.

This product has an inner lining—depending on the model, this can be a fleece band around the entire circumference, a full fleece lining, or another variant that reliably keeps the forehead, ears, and neck warm. A fleece band allows air to escape and circulate above the head. A full lining, on the other hand, is an excellent choice even for low levels of activity. All variants cover the ears and protect them from drafts.