Sport is an important part of many people’s lives—as both recreation and entertainment. It is also a sizeable industry with political and economic ramifications in today’s world. Within the last half-century or so, sports wear has become a driving force for new trends in fashion and for textile innovation. This special issue of Fashion Practice was inspired by the “Spandex to Sportstech—Fashion and Innovation in Sportswear” conference, organized in 2011 by guest editor Mette Bielefeldt Bruun at the Danish National Research Foundation’s Centre for Textile Research at the University of Copenhagen.