The Parentesi was born out of the collaboration between Achille Castiglioni and Pio Manzù in 1971. The word "Parentesi" (Italian for "brackets" or "parenthesis") refers to the nickel-plated shaped tube on a ceiling to floor steel cable that is connected to the floor and ceiling and can reach up to 157". The tube allows the lamp head to move vertically along the cable. The head fixture is an injection-molded black elastomer that comes with a switch. The Parentesi light provides direct lighting and is available in black, nickel or red. "Pio Manzù had the original idea for Parentiesi. He thought up a fixed vertical boom and a cylindrical box with a slot for the light, which went up and down: you stopped it with a screw. He replaced the boom with a metal chord that, when bent creates friction and enables the lamp to be in position without requiring any screws." - Achille Castiglioni.