The fauteuil Grand Confort model presented at the Salon d’Automne in 1929 as part of the équipement intérieur d’une habitation was first created for the Villa Church habitation in Ville d’Avray in 1928. Charlotte Perriand personally took charge of the research into materials and colours for this project, placing special emphasis on the influence of the details and finishings on the interaction between user, space and furnishings. The research led to the production of a series of two-toned versions of the cushioning: separate cushions in two-toned coverings that can be positioned in any number of different positions to provide a constantly fresh look. The frame is in bicolour steel: with the base in basalt grey and the rest of the structure in blue. Cushions with polyester padding. Upholstery is available in two different types of fabric, each with five different colours: the fabrics are satin or cotton and the colours are interchangeable.