12 months and up. The Jumbo Hexagon Manipulative Set is the ideal early Stem toy! This set of 48 jumbo hexagon pieces feature knobs that can easily snap into place to form imaginative structures. Little ones will explore color and shape recognition, spatial relations and early engineering concepts. Sized perfectly for little hands, set comes inside of a stackable storage bin with locking lid. Pieces come in 6 bright colors red, yellow, blue, green, orange, and purple. Hexagon pieces each measure 4" x 4".