Functional fabrics are specially designed textiles that offer enhanced performance characteristics, such as moisture-wicking, breathability, and durability. These fabrics are commonly used in activewear, outdoor gear, and medical applications, providing comfort and utility for various activities. In addition to traditional performance features, some functional fabrics incorporate technology, making them 'smart fabrics.' These can monitor body temperature, track movement, or even change properties based on environmental conditions, showcasing the innovative potential of modern textile engineering.