The document discusses smart textiles, which are fabrics that can sense and react to environmental stimuli. It provides examples of smart textiles that monitor biometrics, control connected devices, and regulate temperature. Smart textiles are classified as passive, active, or ultra smart depending on their sensing and reactive capabilities. The document outlines the development and applications of smart textiles in areas like healthcare, fashion, and sustainability. It predicts growth in the smart textiles market driven by medical and wearable technology sectors.