Marimekko Cushion Cover Joiku. The Joiku pattern cushion cover is made of heavyweight cotton. The cushion covers are sewn using the whole width of the fabric, and therefore their appearance and colour may vary slightly. Each item is unique. The Joiku (traditional Sami song) print conveys a powerful, calming experience of nature. The pattern reflects the beauty of a pure natural landscape with a multitude of colors, on a dusky evening, or early in the morning, just before sunrise.