Selected international designers, illustrators and artists were invited to submit designs for this one inch (25mm) button badge series. Stereohype sells B.I.O. (By Invitation Only) Series 18 badges separately and gives them away as a free surprise badge with selected Stereohype T-shirts. B.I.O. Series 18 includes artworks by Agathe Jacquillat / FL@33, Andreas Gnass / U9 visuelle Allianz, Mike Faulkner / D-Fuse, Dan Fern, Daniel Koh, Gregori Saavedra, Holger Jacobs / Mind Design, Maria Nechaeva, Matthew John Oakley, Renaud Vigourt, Richard Fenwick and Tomi Vollauschek / FL@33. Released: November 2018