
Of all the objects in the British Design Classics stamps series, the polypropylene chair is probably in everyday use the most, even to the extent that it’s taken for granted and not noticed. Yet, Robin Day‘s plastic seat is one of the most enduring classic British designs. Over 20 million have been made since its introduction in 1963, and the chair is to be commonly found in workplaces, schools, and shops up and down the country; there’s probably one near you right now.
Day had created the seating in the Royal Festival Hall in 1951, and originally designed the injection moulded polypropylene seat with an enamelled bent tubular base for Hille International, inspired by the Eames’ ‘Plastic Shell’ fibreglass chair from the 1950s. To be of low cost, durable, and lightweight, thermoplastic was decided to be a fit material for the job, also lending itself to be tough when the chairs were stacked.
Did you know?
The polypropylene chair was one of the first pieces of furniture (if not the first) to fully make use of the mass-manufacturing opportunities of injection moulding, and has yet to be replaced. Its ordinary but extraordinary design has guaranteed its place in culture.



