N is a project that introduced a significant innovation, protected by patent, in the field of task seating: the backrest consists of a non deformable mesh stretched between two horizontal crossbars, therefore not within a closed frame, which is tensioned and shaped three dimensionally by the lumbar support sliding along the central upright. The lumbar support is therefore free to move upward and downward, allowing the geometry of the backrest to be adjusted at will, adapting it to one’s own size and body shape.