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 - Hunter Green17.526
Adult Medium - Hunter Green1928
Adult Large - Hunter Green21.528.5
Adult XL - Hunter Green2329.5
Adult 2XL - Hunter Green2531
Adult 3XL - Hunter Green2732.5