"I bought these because we were doing Thomas The Train theme for my sons 2nd birthday. I wasn't sure at first but I read a review stating that they were a good buy. So I bought enough for 24 party favor boxes. I had children at the party ranging from 2-16, and everyone of them wanted one of these keychains. They were a big hit. The only thing I regret is that I didn't buy more. For the adults!"