So I'm a bit disappointed because they sent me square jars instead of round jars, they will still work for my purposes just disappointed that they aren't as cute and don't want to mess with them exchange. They were packaged well and everything arrived safely. Seems pretty sturdy and leak proof. No water flowed during the test. As others have said they are definitely not 4oz, maybe just under 3.5oz if filled to the brim but that was to be expected from the comments. Overall it seems like a good product and would work well for the gifts I have planned.
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