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 - Black1827
Adult Medium - Black1929
Adult Large - Black20.529.5
Adult XL - Black2230
Adult 2XL - Black24.531
Adult 3XL - Black27.532