I used them for my girls as of 3 months old. My first daughter loved them, the second one doesn't enjoy the ones for babies but she loves the ones for 9m+ they are more interesting. Personally, I don't like the ones for 0-6m they make me dizzy too much going on for no reason. The later ones at least are teaching them colors, shapes, words etc....I suggest you get the ones for older kids, my baby's favorite right now is baby Van Gogh
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