Olof Ottelin was the manager of the furniture department of the Helsinki Department store Stockmann's, while he at the same time was the main designer of their own extensive production in the 1950–1960s. The “Jumbo” chair is probably his most characteristic chair. As a funny job on the side, Olof Ottelin had a sharp pen for caricatures, where he would depict himself and fellow Finnish Designers for the Magazine “Kaunis Koti”. A great example here shows caricatures of Olavi Hänninen, Antti Nurmesniemi, Ilmari Tapiovaara, Carl-Gustaf Hiort of Ornäs and one of himself, with possibly his personal favourite - the “Jumbo” chair - accompanied by the text “Also for Adults!”.