1Made of premium environmentally friendly material, non-toxic and safe. 2Exquisite workmanship, no burrs, prevent your child's hands from hurting. 3Multiple levels for your kid to play, brings you more fun during playing. 4Guide your child to observe, practice, verify, and reflect, turn passive learning into active learning. 5Through the game, the baby can exercise visual measurement and develop the baby's logical thinking ability. 6A nice educational gift toy for your child above three years old.