Several recent developments in materials science have indicated that there is currently strong worldwide interest in using shape memory polymers in different fields, such as textiles, medical applications and vehicle manufacture. There have been significant developments in shape memory technology over the past few years and a number of achievements have been reported. It is not the scope of the book to cover adequately in one volume all aspects of shape memory polymer chemistry and technology in different fields. A systematic review is given of the use of shape memory polymers and their technology, mainly in textiles. Most of the original data presented here are essentially from the Shape Memory Textile Center in the Institute of Textiles and Clothing at the Hong Kong Polytechnic University. In addition, this book is intended to provide a thorough understanding of the concepts and principles of using shape memory polymers in textiles, in terms of its structure, synthesis, and underlying thermoresponsive behaviour. The book also covers the unique features characterizing the shape memory polymers found by different thermal and optical measurements.