The Monobloc chair is a lightweight stackable polypropylene chair, usually white in color, often described as the world's most common plastic chair. The Monobloc chair is named because it is injection molded from thermoplastic as one piece rather than being assembled from multiple pieces. Many variations and styles exist but all are designed to allow the chair to be made quickly and cheaply through injection molding. The monobloc chair has been a controversial piece of furniture. Many people have described the chair as having achieved a cultural global ubiquity. This has been seen as both a positive and a negative, with some considering the homogenous nature of the chair part of the evils of globalization, while others have called it one of "the world's most perfectly designed objects."

Source: Wikipedia