Bests & Worsts Reviews from Amazon

There's no way these can be alright. They put a thin rubbery piece that SHOULD fit into a groove at the bottom to keep in place, the more you try to fit it in, the worst it gets. I have attached a video & several pictures showing the issue. It's will 4 of the 7 that I opened to look at. If you're not worried about airtight, then you could probably use them.. I will be returning ASAP!! Maybe I received a dud batch, but they are useless to me. The quality otherwise seems alright I suppose. The lid is held on with the clear pop up that comes off as you squeeze down & slip it off one end, then an inner spring with another piece made of sand material as top, then a thin silicone thing sits off groove to get pushed up for airtight seal... That doesn't work..