Designed in 1964 by Maija Isola, the Unikko ("poppy") design has been the most popular Marimekko print since ints introduction. Challenging the common notion of decorative florals, Unikko broke from tradition with its creative pop art interpretation in bold, simplified pattern and bright color. Reproduced in infinite color combinations over its 47-year history, the pattern remains current while symbolizing the free spirit of its designer and those who adire it. Pieni Unikko is scaled between the original Unikko and the Mini-Unikko patterns. Generous fitted sheet pockets accommodate thicker mattresses. . Marimekko Pieni Unikko Twin Extra Long Sheet Set. Yellow. Includes one 66"Wx96"L flat sheet, one 41"Wx80"Lx16"H fitted sheet and one 20"Wx30"L standard pillowcases.