Handsome set of four Knoll handkerchief armchairs in grass green upholstery. These chairs where designed by Massimo and Lella Vignelli for Knoll, circa 1983. This particular set of four is in wonderful vintage condition. Knoll’s description of them and what the Vignelli’s stated they used as their inspiration is they “capture the lightness and organic ease of a handkerchief drifting in the wind”. Hence their name handkerchief chair.