A collection that can be configured with modules of 70, 90 and 120 cm and two different widths for the armrest, 14 and 28 cm, that allow for countless combinations, adaptable to any space. Protos is a new formulation of the classic sofa, with a deeper seat, for more informal uses and a significant improvement of comfort thanks to the polyurethane foam in the seat and the goose feathers with hollow fibres in the cushions.