Modules with unusual shapes give life to original seating configurations where aggregation and variability become the protagonists. Additional System is a 1967 project by Joe Colombo re-proposed today by Tacchini respecting the original spirit: a modular system with timeless charm, still "futuristic" today 50 years later. Cushions of six different sizes, inspired by the ergonomic studies of the 1960s, come together in dynamic and flexible combinations created by varying the number of elements and the way in which they are positioned. Additional System is available in armchair, pouf and daybed versions.