Guidecraft Stacking Rainbow Pyramid: Kids Colorful Learning And Educational ToySix hardwood stacking squares feature inset colored plexi for stacking, sorting, building, sequencing and creating imaginative, colorful constructions! Doubles as a stand alone manipulative or an addition to hardwood block construction. Hardwood frames, rounded corners and edges, and inset acrylic plexiglass. Largest square measures 7'W x 7'D x 2'H. Ages 2+.