Width is measured across the chest below the sleeves from seam to seam. Height is measured from the bottom of the shirt to the highest point on the shoulder (where the seam meets the neck).

Please note that each product has its own specific sizing chart.
SizeWidth (inches)Height (inches)
Adult Small - Navy Blue17.526.5
Adult Medium - Navy Blue2029
Adult Large - Navy Blue2130
Adult XL - Navy Blue23.531.5
Adult 2XL - Navy Blue24.532
Adult 3XL - Navy Blue27.534
Adult Small - Navy Blue17.527