Popular Playthings Hexacus (12-piece set) Even very young children can have fun stacking, sorting and building with Popular Playthings Hexacus Unique pieces are designed for little hands, and can be used to create a wide variety of patterns and shapes The 12-piece set comes with a booklet featuring over 100 possible designs Created by world-renowned designer and artist Peer Clahsen; safe for children 2 and over Popular Playthings provides award-winning toys that encourage learning, creativity, social interaction, and good old basic fun