This toy comes with 3 lovely yellow ducks, 1 stairs part as well as 3 sliding tracks. After assembly, 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. There is a mechanism inside the main part of the toy that enables the stairs part works like an escalator. 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. Best birthday gift for your loved one's.