This stool was designed by Eero Saarinen for Knoll International, in USA, during the 1950's.  "Eero Saarinen vowed to address the ugly, confusing, unrestful world he observed underneath chairs and tables -- the so-called "slum of legs." A five-year design investigation led him to the revolutionary Pedestal Collection, including the Tulip Stool, introduced in 1958". It has a cast aluminum base painted in white and was reupholstered with a new synthetic sheepskin. In good vintage condition.