Lovely little slide for my toddler who is 19 months but I don’t agree with the age range being 18 months - 4 years. I’d say more 1 year - 2 years as the slide is small to slide down although safe & age appropriate for now, it won’t last that long before he outgrows it! The balls add a nice touch & they have a plug to hold water in which of course all kids love!