Lesley Jackson, in the aptly titled chapter Op, Pop, and Psychedelia in her textbook Twentieth Century Pattern Design, writes that "from Finland the exuberant all-conquering Marimekko burst on to the international scene" in the 1960s; she illustrates this with one pattern by Vuokko Nurmesniemi, and three by Isola – Lokki, Melooni, and inevitably Unikko.