Book excerpt: 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 them Philips, Burton, MIT Media Lab, XS Labs, New York University, Hussein Chalayan, Cute Circuit or International Fashion Machines are introduced by means of their latest, often still unpublished, project, and a survey of their work to date.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. A must for all those wishing to know everything about fashionable technology.