Smart textiles, also known as intelligent textiles or e-textiles, are materials that have been developed with new technologies to include additional functionalities. These textiles can sense, react, and adapt to environmental conditions or stimuli such as temperature, light, or pressure. The advancements in nanotechnology, material science, and electronics have enabled the development of smart textiles that can perform a range of functions, including energy harvesting, communication, and health monitoring. Some examples of smart textiles include temperature-regulating fabrics, light-emitting fabrics, and clothing with embedded sensors that can monitor vital signs. Smart textiles have numerous potential applications, including medical monitoring, sports and fitness, military and defense, and fashion. They can improve comfort, safety, and performance in various settings, and they have the potential to revolutionize the way we interact with clothing and other textiles. However, there are still some challenges to overcome in the development and commercialization of smart textiles, including cost, durability, and compatibility with existing manufacturing processes. Despite these challenges, the field of smart textiles is rapidly advancing, and we can expect to see more innovative and exciting products in the near future.