If your measurements are in between those listed in the size chart, pick the next larger size.
Place the measuring tape around the largest part of your chest. The tape should be flat and not too tight.
With your arm in a slightly bent position, measure from the center of the back of your neck, along the length of your arm, to the wrist.
Place measuring tape around your waist where your pants normally fit. For most accurate measurement place tape against skin.
Stand with your feet about shoulder-width apart and measure from your crotch down your leg to the floor.