Breathable mesh liners are lightweight materials designed to enhance airflow and moisture management in various products, such as clothing, footwear, and sports gear. They are often made from synthetic fibers that allow air to circulate while keeping the wearer dry and comfortable. This feature is particularly beneficial during physical activities, as it helps regulate body temperature. These liners are commonly used in items like athletic shoes, jackets, and backpacks. Their construction typically includes a network of small holes or openings, which promote ventilation. As a result, breathable mesh liners contribute to improved performance and comfort in active environments.