This third volume in the set of books is dedicated to various sustainable approaches in textiles and fashion sector with a focus on fibres and raw materials employed. Sustainability is one of the important aspects in todays industrial context, which is followed by every industrial sector with no exception to textiles and fashion. Sustainability and strict adherence to the principles of sustainability has become as one of the essential needs again for any industrial sector including textiles and fashion. There are countless measures in terms of various approaches to make the textiles and fashion sector sustainable. These measures, but not limited to, ranging from innovating and implementing new fibres and raw materials, introducing innovative manufacturing methods, chemicals, processes to focus on all the possible stages of a textile products life cycle from cradle to grave. These approaches include making the textiles and fashion sector circular and also development of new products from sustainable raw materials/processes or combination of both.