A clever little device that simply snaps onto the top of a can & means that you can re-seal it with a screw-top rather than having to drink it all in one go. It's leak-proof & reuseable, so really useful to have around the house for the kids to use. Keep a couple in the car & you'll soon discover just how handy they are for trips to the beach, long car journeys, & the weekly big shop"."