"Optical" top : the optical colors blend shows us how the rotation of a top brings about an optical colors blend... a fascinating toy ! Various aspects of color theory are demonstrated with the use of interchangeable discs. Designed by Ludwig Hirschfeld-Mack. Provided with 7 discs. Diameter 10 cm. Children aged 3 years and over.

Composition : wood supplied from ecologically approved forests within Europe, non-toxic coloring.