Referring to one of our favourite books «Collapsibles» by Mollerup, we noticed how usually collapsible furniture is very light, flat and purely practical. We thought of creating a seat that would grow from flat to full; from closed to opened, revealing something special and surprising when fully expanded.
At first we looked into concertina structures - the flexible part of the accordion. The result was a bit too complex and not very comfortable. We simplified the folds until it was both easy to fold and comfortable to sit on. It naturally grew into a flower shape.
Once we adopted the principle we translated it into a coffee table and a lampshade which was joyful as with less constraints. The name Concertina is eventually a memory of our own process.