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 1828
Adult Medium 2029
Adult Large 2129.75
Adult XL 23.5030
Adult 2XL 25.5031
Adult Medium - Navy Blue19.529
Adult 2XL - Navy Blue