Born in 1970 by Livio Castiglioni and Gianfranco Frattini, and defined by Domus as "a snake of endless light", it immediately became part of the history of Italian and world design. Its structure in translucent flexible PVC, reinforced and with resin terminals, makes it virtually indestructible. The various elements can be connected in series up to a maximum of four pieces can be rolled up as desired. It emits a diffused light and its timeless design makes it an evergreen suitable for all environments. Thanks to its flexibility, that makes it unique in the form, it can be placed on the ground or on a table, hung or twisted to invent new games of light every day. Produced from 1970 to 1983 and slightly modified in 1999, today it has been rebuilt replacing the classic light bulbs with high efficiency LEDs. Boalum is part of numerous collections of design museums, starting with the Museum of Modern Art in Philadelphia or the Museum of Italian Design in Milan.