If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different suggested sizes, order the size indicated by your chest measurement.
How to measureCHEST
Measure around the fullest part of your chest, keeping the tape measure horizontal.SLEEVE LENGTH
Measure around the fullest part from the shoulder to hand, keeping the tape measure straight.FRONT LENGTH Measure around the fullest part of your upper body to waist , keeping the tape straight.