Unbutton the collar and open the top collar outwards,as shown,so the collar band lies flat and fully visible. Measure straight across between the two attachment points. Keep the collar fully extended and flat for an accurate measurement.
Button up the shirt and lay it down on a flat surface. Measure it from the bottom of one armhole to the other (the widest part of the shirt). Double the result for your final chest measurement.
Hold the measure tape 8 inches below each armhole of your shirt to determine your waist size. Measure across, from one end to the other and double the result for vour final waist measurement.
Button up the shirt and lay it flat on it's front. From 1 inch below the shoulder tip(where it connects with the sleeve), measure across the shirt to the corresponding point on the other side.
Short: A shorter shirt length for a clean, contemporary look, ideal for wearing untucked.
Standard: A versatile regular length that works well tucked or untucked.
Long: An extended shirt length for better coverage and a more classic, elongated silhouette, ideal for a tucked-in look.