Design Jan Armgardt . Jan Armgardt has created a particularly inventive piece of seating furniture for Wittmann in the shape of Rio. The sofa doubles up as a comfortable chaise longue with built-in storage. It converts effortlessly, and is ideal for both sitting and reclining. Armgardt has also hit on an unusual solution in formal terms. The inviting shape lends Rio a classic and timeless appearance despite its innovative dual function. Although the seating and reclining areas are visually distinct they blend into a harmonious whole. There is also a matching stool which stands out for its refinement. It can be used as a seat or – thanks to the removable sliding wood top – as a table.