The Plia Chair revolutionized the concept of folding chairs when it debuted at the Fiera del Mobile in Milan in 1967. So many fair attendees walked off with the lightweight plastic chairs that the remaining samples had to be chained to the exhibit booth. An X-frame design with roots in ancient Rome and the “drunken lord” chairs of the Ming Dynasty, Plia’s iconic status is based on an ingenious three-disc hinge that allows each of the rotating parts to be joined at a single pivot point. Plia folds and opens easily with one hand movement and be stacked open or closed or hung on wall hooks. Plia is only one inch thick when folded (two inches at the hinge) and is especially suited for cafes, events and informal meetings both indoors and out. More than seven million Plia chairs have been sold, proving the appeal of its airy combination of chrome-plated tubular steel and translucent plastic.