They were only airtight when the lid and container were swapped to see what combination of lid and container would be airtight. One can had a small chip. Lids were difficult to open and close. It is not easy to tell if the lid is fully closed/sealed. Would have liked to keep them as I like the Pyrex brand but ended up returning them and buying something else. Rated 2 stars because they seemed sturdy and probably work fine if you don't need them airtight, but if advertised as airtight they should fit the marketing.
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