These are so nice! Storing wine properly does impact how long the wine will last once opened, and this something I've noticed. I have tried wine stoppers that were supposed to help with that. The issue I have always had is that they are just too complicated, involving pumping out air and multiple steps. I found myself giving up and using the standard rubber wine stoppers most of the time, that is when I didn't re-use the original cork. These stoppers are almost as easy to use but they deliver results closer to he complicated stoppers without all the trouble. The seal is tight too, it would survive a spill and will likely last a very long time.