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Technology has also helped, and most experts agree fake bags have never been better. So the general shape of the authentic tote bag is more of a smooth “U” shape, while the fake one had some pronounced corners on the side. This is mostly because the fake bag must have been stored folded, and the stiff fake leather tends to hold the creases more. But I wouldn’t say this is a hard and fast rule since some fake ones may be used consistently enough that the leather “corners” relax a bit. Or an authentic one might be stored folded and flattened for a long time