It had an ugly crease starting from the neck all the way to the bottom hem. I wetted the front panel with hot water before placing those weights onto it to flatten the crease.
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The collar was crooked and totally flat. Again I used hot water to reshape it. When fully dried up it should keep this nice mustache shape.
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that crease pattern is the jacket's natural pattern when worn open though, you see the other side of the chest with zippered chest pocket have different pattern, it is the reason I like slant sip on both chest, it will avoid that vertical fold
I always see something like this