It is not an optical illusion, the Junya Ishigami Family Chairs are meant to differ in design. The collection of five varying steel chairs were made for the Italian design company Living Divani and were imagined by Japanese architect Junya Ishigami. According to the Living Divani website, the designer's idea behind the series is that the chairs "live in harmony, like a family. Whilst they are all similar, each chair has a slightly different shape, and its own personality."
The entire collection is made from steel pipe, making the chairs light and aesthetically appealing while their varying sizes make them visually interesting, from tall to short to wide.
The collection is available to be purchased in both indoor and outdoor versions. So, you can bring Junya Ishigami's happy family of chairs anywhere.