This toy comes with 3 lovely yellow ducks, 1 stairs part as well as 3 sliding tracks. After assembly and start the toy, the ducks will be sent to the top one by one and then slide back to the starting point for the next round, With the escalator like mechanism and the sliding tracks, these little ducks will back to the sarting point automatically after sliding down. Therefore, it can keep working until you stop it. Dynamic music will sound and shinning lights can be seen as the toy starts working, which makes the toy more funny and attracts kids attention more easily.