I bought several shirts from Ali Express that were advertised as US Size XL. When they arrived, they turned out to be US Size M at most (I have lived in the US and know what US Size XL looks and feels like). I opened disputes for which I was expected to provide "evidence". What evidence can you provide except your first-hand knowledge of US sizes? I did not want to return the shirts because shipping would have cost me what the items were worth. They do not seem to understand that at all. Their only explanation is "go see the size charts". If that is the case, then that is what their descriptions should say "See size charts for sizes", instead of "XXXL like US XL". Ali Express themselves judge these disputes, and the judgment is not fair. At the end two of the sellers offered to refund $1 and $4 for items that I cannot use and that cost over $12 each. In the US culture, if you buy something and you do not like it for whatever reason, you can return it for a full refund. If they want to sell to Americans, that is what they will have to do. I would not buy from them again.