There are 3 reviews with an average rating of
4.33
Bit of a fiddle at first to get on the can but absolutely seals it and does what it states it does..I only got mine today but i am very happy so far. Lets see how long it lasts, will update.
Bit tricky to get on (even harder to get off until you have drunk the drink!!!), but actually a great idea
good solution for cans in the car which has no can/cup holders