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 - Banana Yellow1828
Adult Large - Banana Yellow2231
Adult XL - Banana Yellow23.532
Adult 2XL - Banana Yellow24.531