Designed by Charlotte Perriand, 7 Fauteuil tournant is a small revolving armchair with a frame in trivalent steel (CR3), back and seat cushion padded with CFC-free polyurethane foam and polyester wadding. 7 Fauteuil tournant dates back to 1927 and was erroneously attributed to Le Corbusier, but designed by Charlotte Perriand even before she joined the famous architectural study. The basic components of each type of seat are placed around the simplest frame, made up of a metal tube chosen as primary support of the object. This small armchair was designed to brighten up modern houses and still suits every environment, thanks to its sophisticated design. The enveloping backrest of the 7 Fauteuil tournant comes from some experiments made with air chambers. Another special part of the shape are the legs, that bend and give strenght and stability to the design, eliminating the need for conjunction pieces. Like the other pieces of the series La Corbusier, it is on display in all the museums of modern art in the world including MoMA in New York.