I purchased this roller coaster for my granddaughter who is 17 months old.  I felt she could grow into using it!  That took about 5 minutes.  She rides it and pushes it back up and rides again.  When not using the car she is rolling balls down it.  It is also a nice slide for herself and stuffed animals.   I would recommend this for everyone!  Adults have fun watching kids being creative.  BUY IT❤️