Which term refers to the ability of a fabric to allow air and moisture to pass through?

The term that refers to the ability of a fabric to allow air and moisture to pass through is "breathe." When fabrics are described as breathable, it means they have properties that enable air circulation and moisture vapor transfer, which is particularly important for comfort in clothing. Breathable fabrics are designed to keep the wearer dry and comfortable by allowing sweat to evaporate while also allowing fresh air to circulate, which helps regulate body temperature.

This characteristic is vital in various apparel applications, especially in activewear and sports clothing, where moisture management plays a critical role in performance and comfort. The ability of a fabric to breathe enhances the overall experience for the user, making it a desirable quality in many types of clothing.

Insulation refers to a material’s ability to trap heat, which is not related to air and moisture permeability. Repulsion involves a fabric's tendency to resist moisture or other substances, rather than allowing passage. Hydrophilic describes materials that attract water but does not specifically pertain to the ability to allow air and moisture to flow through the fabric.