The interplay of electronic textiles and wearable technology, wearables for short, and fashion, design and science is a highly promising and topical subject. Offered here is a compact survey of the theory involved and an explanation of the role technology plays in a fabric or article of clothing. The practical application is explained in detail and numerous illustrations serve as clarification. Over 50 well-known designers, research institutes, companies and artists, among are introduced by means of their latest, often still unpublished, project, and a survey of their work to date. Given for the first time is a list of all the relevant information on research institutes, materials, publications etc.