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 Green17.526.5
Adult Medium - Hunter Green2027.5
Adult Large - Hunter Green21.529.5
Adult XL - Hunter Green23.530.5
Adult 2XL - Hunter Green25.532.5