Our daughter didn't get this toy at first, but she really loves it now. She was about 19 months when we first got it, and just disassembled it as the other reviewers described. She actually had fun just doing that, so we went with it and let her have her fun. After about a month of that kind of play, all of the sudden, the lights went on, and she just loves bouncing the balls. She also likes to try bouncing other things, like the Little People characters, on the trampoline. She also has started to learn to assemble it. She was running by the time she got it, so she didn't pull herself up with it. I would probably put 18 months and up on this item. The toy works best when put on a hard surface, like a table top or wood/linoleum floor.