The Kalasääski pattern ready-made curtain is made of unbleached cotton, which is printed in Helsinki. The curtain features a curtain tape at the top edge, which makes it easy to hang either on a curtain rod or with hanger clips from a curtain rail. The curtain tape also helps with gathering the curtain as desired.

Stripes have always been an integral part of the world of Marimekko patterns. Kalasääski (osprey), a vivid freehand pattern of vertical and diagonal stripes, is one of the innumerable striped designs created for Marimekko by Maija Isola.