This document provides information about smart textiles. It defines smart textiles as textiles that can interact with their surroundings and react or adapt to environmental stimuli. The document then classifies smart textiles into three categories: passive smart textiles that can only sense the environment, active smart textiles that have both sensors and actuators to respond to detected signals, and ultra smart textiles that can sense, react, and adapt to the environment. Various applications of smart textiles are discussed, including uses in healthcare, sports, military, entertainment, and fashion. The importance of smart textiles for the future textile industry is also highlighted.