PK20™ is a laidback and elegant lounge chair. PK20 is built upon a flexible matt chromed spring steel frame. The original idea for the chair was to use the excess leather strips from the production of other leather furniture to optimize production. But the idea was rejected because the leather strips were too different, and currently is only the finest leather strips used. The PK20 version with a low back is part of the permanent collection at the Victoria and Albert Museum in London.