Born in Novara in 1932 and studied at the Academy of Fine Arts in Milan. After completing his studies, he devoted himself immediately to the nascent world of industrial design and to an intense artistic activity. One of the traits of Mari's work, internationally renowned as some of the best Italian design, is the unending quest for, and experimentation with, new product forms and meanings. Sometimes he even moved consciously outside the mainstream of traditional industrial design.
Mari’s activities has extended to collaboration with public bodies, research and design of town planning and teaching, through lectures and courses in Italy and abroad. He has been working for Zanotta since 1981. He passed away in 2020.