Quickly transformable mechanism. The sofa can be opened by lowering the two armrests. It is equipped with attachments for different types of feet, with seat and orthopaedic bed base made up of evaporated beechwood slats. Highly-resistant cold-rolled steel structure that is lacquered with black or grey epoxy resins in high temperature oven. 12 cm-thick foam rubber mattress. 12 cm.