517 Ombra Tokyo, designed by Charlotte Perriand for Cassina, is a lightweight chair, a tribute to Japanese tradition. 517 Ombra Tokyo is a lightweight chair which takes its form, with graceful folds, from a single die-pressed piece of curved ply in natural or stained black oak. Designed in Japan in 1954 for the Synthèse des Arts exhibition this light stackable chair pays tribute to the traditional Japanese art of Origami with its delicate proportions Natural or stained black oak.