It is possible to change the position of the backrest/headboard, moving it on a metal frame of the sofa. This allows you to transform the sofa into a couch or even a bed.
free for production
The inspiration for the creating the concept was the forms and design of the upholstered furniture in the mid-20th century. The sofa frame can be made of metal pipe/ seat and back — molded foam/ upholstery — fabric or leather.