The Red and Blue armchair is an iconic model designed by Gerrit T. Rietveld in 1918. It is made with a frame in black dyed beech with blue seat and red backrest in painted plywood. Lines and surfaces are arranged in a vertical-horizontal composition, linked to one another without any joints. As part of the C90 Mutazioni project, Cassina off ers one of the versions of the iconic design – Black Red and Blue Zeilmaker Version – with backrest and seat in green and frame in black with white end parts.