Exclusive office chair with armrests designed in the 1980s by Richard Sapper and manufactured by KNOLL International in the United States in the early 2000s. The black leather seat can be adjusted in height using a convenient lever which, thanks to its red color, also becomes an aesthetic detail. The base has five legs with swivel casters. There is a slight mark on the seat. This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution