The Proust Armchair was designed in 1978 by Alessandro Mendini and has been reissued by Cappellini.
The armchair has a hand-carved and hand-painted wooden frame, upholstered with multicolor fabric in a choice of of blue/grey/yellow or black/green/red.
It is available to buy from Viaduct although no price is given. For such a decadent piece of furniture, I think it is safe to assume the price tag will be high. Visit the Viaduct website to enquire.