12 months & up. This item is a stacker, a sorter, and a geometric puzzle all in one! Introduce children to early math, shape recognition, and encourage fine motor skills with this stacker. Children will place the colored block onto the corresponding shape peg and can count how many of each color they have stacked from one to five. This stacker consists of a base with 5 pegs (in the form of a circle, rectangle, triangle, square, and a pentagon) and 15 colored manipulatives with corresponding geometric holes. Color coatings are water-based paint.