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)
Junior XL - Royal Blue2025.5
Youth Small (6-8) - Royal Blue16.522
Youth Medium (10-12) - Royal Blue17.523.5
Youth Large (14-16) - Royal Blue18.524
Youth XL (18-20) - Royal Blue2025.5