I've tried numerous can covers over the years, and these are hands down the only ones that work! They are very simple, pop-on/pop-off by a little tab on the side. I usually drink half-can's, so popping on one of these covers and throwing them in the fridge saves me from throwing out those half cans. My sons use them to put on their energy drinks and I occasionally use them on my beer. Once we knocked the can over and nothing even spilled out, they look to be air/spill tight. Highly recommend to somewhere who had trouble with other kinds of can covers in the past!
All of the other snap top lids had screw tops of secondary flip up openings. That's probably not what you want. If you're like me, you sometimes just want half a soda, and you want to save the rest for later. If so, you just want to put a secure lid on it.
These things are perfect for that. They fit snugly and keep the drink fresh for next time.
I've tried several different kinds of soda pop lids and the idea is here, but they don't stay on. It doesn't take much carbonation gas to blow the top off of these lids. More often than not, I put a can in the frig with this lid and when I go to retrieve it later the top has popped off and the soda has gone flat.
Also the tab on the side of the lid breaks rather quickly.
The best lid I've found was a promotion piece from a Chicago fast food franchise called Pockets. Wish I could find those lids.
Ships and arrives fast. Works perfectly. No more unfinished sodas all of the place. You can order up to 4 colors per dozen so it's easier to know who's soda belongs to who. I'm on my 3rd dozen but that's only because I have elderly people in the house who keep throwing them away :)