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 - Kelly Green1829
Adult Medium - Kelly Green1928.5
Adult Large - Kelly Green2230.5
Adult XL - Kelly Green2331
Adult 2XL - Kelly Green2330
Adult Medium - Kelly Green
Adult Large - Kelly Green
Adult XL - Kelly Green