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 - Carolina Blue1826.5
Adult Medium - Carolina Blue2029
Adult Large - Carolina Blue21.530.5
Adult XL - Carolina Blue2431
Adult 2XL - Carolina Blue25.532.5