PK25 was designed by Poul Kjærholm as his graduation project at the School of Arts and Crafts in Copenhagen in 1952, and it remains one of the most technically and formally ambitious graduation pieces in the history of Danish design education. Also known as the Element chair, the PK25 reflects Kjærholm's early and sustained interest in the transformation of industrial materials into objects of design significance — a conviction that common materials, treated with sufficient rigour and intelligence, could achieve results of genuine artistic quality.

The design reduces the chair to a single piece of each material: one continuous length of flag halyard for the seat and back, and a precisely welded steel frame of minimal complexity. This ambition — to find the irreducible minimum of material required for each structural and functional role — produces a chair of extraordinary lightness and visual tension. The flag halyard creates a woven surface of considerable tactile and visual richness, which contrasts sharply with the precision of the flat steel frame beneath it.

The PK25 is well suited to residential living rooms and private interiors where a piece of significant design heritage is valued, as well as to cultural institutions, galleries, and hospitality environments where the provenance and formal quality of the furniture contributes meaningfully to the character of the space. Fritz Hansen produces the PK25 to the material and construction standards the Kjærholm collection requires.

Available as a 2D DWG drawing, 3D model, Revit file and ArchiCAD file.