Breathable fabrics are materials designed to allow air and moisture to pass through them, enhancing comfort during wear. These fabrics help regulate body temperature by promoting airflow, making them ideal for activewear and outdoor clothing. Common examples include cotton, linen, and specialized synthetic materials like polyester and nylon. The breathability of a fabric is often measured by its ability to wick moisture away from the skin, keeping the wearer dry. This feature is particularly important in sports and fitness apparel, where sweat management is crucial. Breathable fabrics are also used in sleepwear and bedding to improve overall comfort during rest.