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 - Black17.527
Adult Medium - Black19.528
Adult Large - Black2229
Adult XL - Black23.530
Adult 2XL - Black25.531.5
Adult 3XL - Black2732
Adult Large - Black