"Malko" "Box Wines" have a plastic bag inside, that collapses as you enjoy the contents.
Often over several days or even weeks, depending.
As the wine comes out, and the bag collapses, no air is introduced to make contact with the contents, hence, the wine is "Preserved" better.
It doesn't "Oxidize".
A "Bottle" is good for ageing wines, for years sometimes, but once it's open you better drink it then, which may not be a Bad Thing!!!!
My sister and her husband have hundreds of bottles of "Good Wines", but for everyday consumption with dinner, etc., their "House Wine" comes out of a "BOX"!
I think that part of the reason they do is, they can't tell how much they drink from a "Box", like you can from a "Bottle"!!!!!!
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ps., I realize you already know all this, but others may not, that's all!