The Baby Toys Rolling Ball Pile Tower is a great early education toy for babies. It is colorfully designed to help cultivate the baby's cognition ability of color. The toy also helps exercise children's concentration. It is easy to play, smooth to play. Put the ball into the basketball hoop. The ball will slide down the track from the top to the next layer, and finally reach the bottom. The track toys are made of high quality materials and are safe for children over 3 years old to use. In order to ensure the safety of the baby, please play under the supervision of an adult.