The length refers to your body height. The actual garment style is not affected. Short sizes are approximately 1" (2-3cm) shorter than the regular length. Tall sizes are approximately 1.5" (4cm) longer than the regular length. Please refer to the size guide for detailed measurements.
Choose:
short for heights 5’4” (162cm) or smaller;
regular for heights between 5’4” (162cm) and 6’0” (180cm);
tall for heights 6’0” (180cm) or taller.
Note: If you prefer your garment to fit a certain way, you can pick the length accordingly. (You are 5’10'“ but you want your sleeves to be extra long, choose tall. Or maybe you prefer a shorter fit, then choose short.)