In 1980, Boonzaaijer and Mazairac founded their own design company, where they specialized in industrial design and architecture. Their design philosophy focuses on creating furniture that is a component of the overall architecture of a space. Together they are known for their functional seating and for the stunning work they create for a variety of clients. Collaborations and client work included Pastoe, Hennie de Jong, Leolux, Metaform, Castelijn, Arco, Apage, and IKEA.
