Quadrone by Internotredici for Bardi, 1974. Transformable padded with polyurethane and acrylic layer on a supporting structure in wood and chromed steel tube. The total lowering of the backrest-armrest (up to the height of the seat surface) allows the user to transform the single seat into a table / pouf that can be combined into a single bed (obtainable from two armchairs) or single bed (obtainable from a sofa ), which can be further combined into a double bed. The transformation is obtained manually with a very simple movement without the intervention of mechanical parts or the aid of further technical instruments.