If Lil' Poundcake was a bottle, she would look something like this, I believe. I refer to these as "nip" bottles. Throw in a shot of whatever you need; espresso, asparagus water, ginger elixir, the possibilities are endless! The cap goes on pretty tight. I'd trust it about 98%. I'd trust it maybe in a Michael Kors bag, but not a Chanel. You get the idea. Materials include rhinestones, hot glue, puffy paint, Pearls, and glitter.