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 17.525
Adult Small - Brown
Adult Medium 19.527
Adult Medium - Brown
Adult Large 20.529
Adult XL 2328
Adult XL - Brown2328.25
Adult 2XL 2529