Tuulenpitävään

Tuulenpitävään is a Finnish adjective that translates to "windproof" in English. It describes a material, garment, or structure that is designed to resist the passage of wind. This property is achieved through the use of tightly woven fabrics, specialized coatings, or impermeable membranes.

The primary function of being tuulenpitävään is to offer protection from the elements, particularly in cold or exposed environments. By blocking wind, these items help to retain body heat and prevent wind chill, which can significantly lower the perceived temperature and increase the risk of hypothermia.

Garments such as jackets, trousers, and gloves often feature tuulenpitävään qualities. They are essential for outdoor activities like hiking, skiing, cycling, and sailing, where exposure to wind is common. In construction, tuulenpitävään materials are used for building envelopes to improve energy efficiency and comfort by preventing drafts. The effectiveness of a material's windproofness is often measured by its air permeability rating. A lower rating indicates better wind resistance.