Antonio Citterio developed the AC4 chair for Vitra in 2008. The aim was to integrate the function of an office chair with the aesthetics of designer pieces. Before the AC4 chair, Citterio felt that previously the focus had been on either one or the other. The AC4 office chair is a subtle yet sophisticated seat with three-zone comfort in the back, and automatic weight adjustment in the synchronous mechanism. Contact us to learn more about the AC4 chair.