It was designed in 1958 by Danish twin brothers and architects Ib and Jørgen Rasmussen. In the chair's lifetime, it has received several design awards, including one for the Kevi wheel, which Jørgen Rasmussen designed in 1965. The Kevi chair finally gave the world the ideal solution for sitting comfortably while at the same time being able to move the chair easily in all directions.
Oh, by the way...Rebecca at Mid-Century Modern Remodel is having a drawing for a beautiful turquoise vase, and she wants your input on a new masthead for her blog. Drop by and spread the bloglove.