The Opus is a youthful, extremely light and simple but multi-deployable comfortable chair, available with or without armrests. The upholstered seat and back are available separately and can be attached at a later time if so required. The Opus is easy to link, stackable without stacking buffer and extremely low in weight; the Opus can be picked up with one hand. Durability and recyclability of this product were part of the basic principles for this design. Opus was awarded a GIO in recognition of a Good Industrial Design 2001.