Flex your imagination with this new accessory for Geometiles® ! MOBIES can turn your Geometiles into flexagons, Moebius strips, and many more things that fold, twist & move! MOBIES are a great exercise in spatial relationships, conceptual thinking, and pure fun. 10 pieces included. Mix your MOBIES with any of the following Geometiles® sets Mini Set 1, Mini Set 2, 4&More Equilateral Triangles, 4&More Rectangles/Squares , 96-piece, Jumbo.