I bought this for a joined Christmas present for my 3 and 4 year old, not sure whether it was going to be a bust or something that they could really enjoy at such a young age. My 3 year old has a little trouble getting more complex structures built because of how strong the magnets are, but my 4 year old LOVES them. She has declared them her favorite toy of the holiday, and plays with them constantly. The magnets are of such great quality, and are built to last. Even though you are only given the little bars and the silver balls, the possibilities are endless. They come packaged great, so it's easy to tell if any pieces have gone missing. I would recommend this to anyone. More than just the average toy you find nowadays, where lights and sounds and flashy things replace quality and actual entertainment value!