Breathability refers to the ability of a material to allow air and moisture to pass through it. This property is important in various applications, such as clothing, tents, and building materials. High breathability helps regulate temperature and moisture, making it comfortable for users in different environments. In textiles, breathability is often measured by how much water vapor can escape from the fabric. Materials like cotton and wool are naturally breathable, while synthetic fabrics can be engineered for enhanced breathability. This feature is crucial for outdoor gear, as it helps prevent overheating and keeps the wearer dry during physical activities.