i got those transparent container with my lifeboatmatches.<br>they are not waterproof after opening, well atleast not competly, i found a drop or 2 inside the container after i kept it underwater for a few minutes... but does that really matters ? lifeboat matches are waterproof. if you want to use little round containers to store other thing than lifeboat matches, you could go to a photo shop and ask for some emty film containers... they are free !! ( usually... )