After trying MANY different types of vitamin cases over the years, these Ikigai aluminum cases are the VERY BEST ones that I've ever used. Yes, they're expensive, compared to the cheap plastic ones you can get at the drugstore, but they're worth every cent! After several accidents with the plastic cases (lids coming off, covers breaking off, or the push-button lids getting activated from being jostled around in my luggage), and having a mess of scattered vitamins, I'll never have to deal with th...