Playskool Poppin' Park Roll-N-Pop Express High quality toys for children all ages Made using safe materials Tested for quality and durability Watch Your Child Push The Train And Laugh As The Balls Pop Out And Either Fall Back In Or Roll Across The Floor For A Chase! The Monkey In The Rear Compartment Bobs Up And Down As The Train Is Pushed. Learning has never been so unpredictable  or fun! Brightly colored train toy helps baby learn hand-eye coordination with unpredictable ball-popping action! As the music plays, your child can drop balls in the train and push it to make them pop out.