The aim behind the structural design of AC 4 was to discreetly integrate the functional elements required for optimal comfort. Up until now, the design of office chairs has emphasised either their aesthetic appearance or their functional features. By contrast, the integration of ergonomic features in AC 4 is so subtle that its sophisticated structural components remain concealed. It achieves a balance between the most advanced ergonomic functions and an unobtrusive appearance: the innovative technical features of AC 4 are neither put on display, nor are they hidden beneath foam padding. AC 4 is an emblematic object with an elegant appearance and uncompromising functionality, ideally suited for refined offices and conference spaces.
AC 4 is available as an office swivel chair and in the version AC 4 Conference for meeting venues.
Antonio Citterio was born in the Italian city of Meda in 1950. He opened his own studio in 1972 and completed his degree in architecture at the Polytechnic University of Milan in 1975. Between 1987 and 1996, he collaborated with Terry Dawn to design many buildings across Europe and Japan. In 2000, Citterio and Patricia Viel formed a multidisciplinary office for architecture, interior design and graphics. The office operates at international level developing complex long-term projects in synergy with a qualified network of specialist consultants. The practice is now called “Antonio Citterio Patricia Viel”.
Antonio Citterio works in the industrial design sector with companies such as Ansorg, Arclinea, Axor-Hansgrohe, B&B Italia, Flexform, Flos, Hermès, Iittala, Kartell, Maxalto, Sanitec (Geberit Group), Technogym and Vitra. He has received numerous awards, including the Compasso d'Oro in 1987 and 1995. Citterio has been a professor at the Faculty of Architecture at the Università della Svizzera Italiana in Mendrisio from 2006 to 2016. He was awarded the title 'Royal Designer for Industry' by the London-based Royal Society for the Encouragement of Arts, Manufactures & Commerce in 2008.