Review on AIEVE Mason Jar Lids: 4-Pack Reusable Flip Top Regular Mouth Canning Lids for Leak-Proof Seal and Convenient Pouring - Ideal for Milk, Coffee, Lemonade (Jars not Included) by Derek Helvie

Not as advertised. I bought several of these and they look beautiful! But they all have some extreme flaws. They all run in one way or another. For example: pink snaps in well but leaks under the flip top when the jar is upside down. Blue is fine if the can is upside down but leaking under the main rim but if you tilt the can upright again. They're all a bit difficult to unscrew, but that doesn't usually bother me. None of this can be used for what I wanted: momentarily sealing (because the filling isn't airtight, any remaining soda water will evaporate overnight), shaking (liquid is flung in all directions), lying on one side (there's a puddle of liquid in the morning). I also have County Line (or maybe Country Line?) caps and they were perfect and didn't have any of those issues. I picked them for some color variety but I regret that.