Which material is known for providing warmth even when wet?

Wool is recognized for its remarkable ability to retain heat even when it is wet. This unique quality is due to the structure of wool fibers, which are composed of a natural material that can trap air molecules. When these fibers become wet, they still maintain their insulating properties, thereby helping to keep the wearer warm. In addition, wool has inherent moisture-wicking abilities, allowing it to draw moisture away from the skin and still provide warmth.

In contrast, while cotton might feel comfortable when dry, it loses its insulating ability when wet, leading to an increased risk of chill. Polyester and nylon, being synthetic materials, also do not retain warmth effectively when wet compared to wool. Understanding these properties is essential for selecting appropriate clothing for outdoor activities, particularly in colder or wetter conditions.