Great product for preserving food items safely.

This set of storage containers was part of my first purchase of Zwilling's Cube storage system. Unfortunately, one of the containers in the set just won't hold a seal for more than a day. I've tried everything to remedy the problem. I dismantled all the seals, cleaned and dried them. I've swapped lids around, trying to determine if the problem was a lid or a container -- it appears to be a lid. I could've just returned the whole set of them, but I'm a man. I don’t return things. And, I'm divorced, so I don't have a wife who will do it for me. So I just use it as an old-fashioned storage container. I need to mention, however, that I love the Cube system! I've been using them for a while now and have purchased more.

holds the seal for maybe an hour I have never once went to retrieve contents from one of those containers with the “nipple“ still down in the sealed position.

Vacuumed and last only about 1 day, the cover will become loose that means air gets in the box. I bought several of this in different size and they are all like that It is just a regular storage box, not real vacuum.

Was able to really organize and maximise our pantry space. Very clear containers making it easy to see what is stored.