This paper provides a comprehensive review of the advancements in Smart Textiles, focusing on the materials and manufacturing processes. Smart Textiles are fabrics that integrate electronics and interconnections, offering flexibility and adaptability to various applications. The review highlights three main categories of smart textiles: passive, active, and very smart, each with distinct capabilities. Passive smart textiles sense the environment, active ones react to stimuli, and very smart ones can adapt their behavior based on circumstances. The fabrication techniques for smart textiles are discussed, including conductive fibers, treated conductive fibers, conductive fabrics, conductive inks, and stretchable interconnections. Each technique has its advantages and challenges, such as conductivity, flexibility, biocompatibility, and mechanical resistance. Conductive fibers, for example, are strong and inert but can be heavy and brittle. Conductive inks, while versatile, may suffer from brittleness and mechanical resistance issues. The paper also explores the integration of smart textiles into various applications, such as medical, sports, and artistic fields. It reviews specific projects funded by the European Commission's Framework Programs, which have focused on personal health monitoring and the integration of sensors, energy sources, processing, and communication into clothing. Finally, the paper discusses the challenges and future directions in the field, emphasizing the need for more robust and reliable materials and manufacturing processes to meet the demands of wearable electronics.This paper provides a comprehensive review of the advancements in Smart Textiles, focusing on the materials and manufacturing processes. Smart Textiles are fabrics that integrate electronics and interconnections, offering flexibility and adaptability to various applications. The review highlights three main categories of smart textiles: passive, active, and very smart, each with distinct capabilities. Passive smart textiles sense the environment, active ones react to stimuli, and very smart ones can adapt their behavior based on circumstances. The fabrication techniques for smart textiles are discussed, including conductive fibers, treated conductive fibers, conductive fabrics, conductive inks, and stretchable interconnections. Each technique has its advantages and challenges, such as conductivity, flexibility, biocompatibility, and mechanical resistance. Conductive fibers, for example, are strong and inert but can be heavy and brittle. Conductive inks, while versatile, may suffer from brittleness and mechanical resistance issues. The paper also explores the integration of smart textiles into various applications, such as medical, sports, and artistic fields. It reviews specific projects funded by the European Commission's Framework Programs, which have focused on personal health monitoring and the integration of sensors, energy sources, processing, and communication into clothing. Finally, the paper discusses the challenges and future directions in the field, emphasizing the need for more robust and reliable materials and manufacturing processes to meet the demands of wearable electronics.