Designed by Tahsin Emre Eke of Istanbul, Turkey, the Zigzag is a unique shelving system that comes ready to be used without any assembling. The Zigzag out of the bag and it’s ready to use. There is no need for screws, hammer or any assembling guides, which you can’t do without with the regular ready-to-assemble furniture

Source: http://tasarim.immib.org.tr/2011/galeri/240