Product Textiles: Materials, Structure, Performance, and Applications is a comprehensive textbook that examines textile products as functional materials designed to meet specific human, industrial, and environmental needs. The book integrates fundamental textile science with applied product analysis, guiding readers from fibre-level understanding to finished textile applications in fashion, home, and technical sectors. It is designed to support higher education programmes in textile technology, fashion design, material science, and related disciplines, while also serving as a practical reference for textile professionals. The book addresses contemporary finishing applications such as moisture management, antimicrobial treatment, flame resistance, and protective performance, while also considering environmental impact and sustainability challenges associated with finishing technologies. The book encourages critical thinking and informed decision-making, positioning textile products as integrated systems where material, structure, finishing, and application must align. Overall, this book aims to develop technically competent and industry-ready graduates who possess both scientific understanding and practical insight into textile products. By combining classical textile knowledge with contemporary developments and sustainability perspectives, this book provide a relevant and forward-looking resource for modern textile education and professional practice.