Mats Theselius began his collaboration with Källemo in 1985. He has been awarded several scholarships and prizes, such as the Bruno Mathsson Prize, the Prince Eugen Medal, and the Torsten and Wanja Söderberg Prize.
Theselius is represented at the Nationalmuseum in Stockholm, the Röhsska Museum in Gothenburg, the Designmuseum Denmark in Copenhagen, the National Museum in Oslo, the Russian State Art Collections in Moscow, and the Museum für Angewandte Kunst in Cologne.
