Designed in 1918 by Dutch designer Gerrit Rietveld, the "Red and Blue Chair" is part of the Dutch De Stijl movement, a rigorous abstraction of lines and colours. An outlook shared by Piet Mondrian, whose objective was to seek out the essential nature of things, combined with the harmonious equivalence of colours, and the use of right-angles. "A sculptural seat with a pure and rationalist form", the design was relaunched in 1973 by Cassina, and remains a design icon.