1. CHEST :
Run the measuring tape around the fullest part of your chest, tight up under your armpits and over the shoulder blades, across your nipples. Hold the tape tight enough against the body so that it does not slip down. Allow your arms to hang down in a relaxed, natural pose. Do not stick out your chest or arch your back. Take a normal breath and then measure and double check. Tip: Make sure that the tape measure is resting directly on the nipples and the back straight.
2. SLEEVE LENGTH :
Place the measuring tape at the shoulder where the vertical part of the arm and horizontal part of the shoulder form an angle. Make sure you measure from the shoulder to the "Pinch" of the hand where the base of the thumb and base of the index finger meet. Repeat this step for the other arm. If one arm is longer than the other, take an average of the two for your measurement.
3. CENTER BACK Â LENGTH:
Place the first end of the measuring tape at the base of the back of your neck and measure down your back to the point where you’d want the jacket to be. This point is usually the bottom of the buttocks.