I like them too, because after they are emptied, they can be reused many times. The only limit (if they aren't broken) is the lids, and I've been moving to tattler reusable canning lids, which solves this problem. A wooden strap across the front of the shelf, reduces the chance of breakage!

But with a hard vacuum, they are impressive! Using a refrigeration vacuum pump, the vacuum is about twice the vacuum most kitchen pumps provide.

Stay safe!

👍💗🤠💙🙏🥳🤕