Smart kids! I hope that you like them. I'm using them right now for my first trip with them, a test run for an upcoming business trip. I found them very easy to fill with anything that's a squeeze, pump or pour but it got kind of dicey for anything like balm that I had to scoop into the containers. I guess that was to be expected. I have one filled with toner and another with micellar water and they truly do not leak. I tucked those two into a ziploc just to be sure, not a drop. I just need a better way to mark the tops so that my nearsighted eyes can identify what's what when my glasses are off. They seem to hold plenty of product for week long trips.