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Title: Fabulous--but be careful!
Review: I bought this for my son was he was 14 months old, he is now a very inquistive 3 year old. Within a few weeks, he had mastered it (except for the one lock that is hard to turn). It is wonderful for practicing dexterity, and great for travel. The only thing is, once they master this puzzle, they can then open all the locks and latches in your home--which can definitely be a safety hazard!
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