Plus-Plus is a new kind of construction toy. Its one simple shape produces endless possibilities - assemble them flat to create a 2-D mosaic or work in 3-D to make more complicated structures. Even curves are possible thanks to the unique design of this deceptively simple shape! Safe for ages 3 and up, and endless fun for a broad range of ages. Designed and Manufactured in Denmark. BPA- and phthalate-free.