6 months & up. These adorable, oversized Chicken & Egg Stackers feature colorful egg cups designed for stacking and nesting play. Build a tower of eggs by matching two pieces then let them fall or nest the pieces from a small chick to a big chick. Children will learn about size relationship and matching while developing fine motor skills and spatial reasoning. BPA and phthalate free. Included: 8 Pieces that make 4 complete egg-shaped chicks.