What is “button stance” in suits?

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Button stance is a measurement that determines the position or placement of the front buttons. You may have seen two- or three-buttoned blazers with respective button stances.  Most designers use the standard stance, and it will work for most men. However, in some cases, based on the torso length, you may have to alter the button stance. 

Apart from the standard, the most widely used button stances are lower 1”, 1.5”, raise 1”, and 1.5”.