Respectfully, as no intended offense, all concealed carry vests look like concealed carry vests- like carrying a sign saying, "I am carrying concealed."
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This. Nobody wears a vest except people who are trying to carry concealed. You see a guy in a vest where nobody else is wearing a vest because it is 100 degrees outside, you and everyone else knows he's packing. Might as well open-carry with a shoulder holster.