1/2 Chest1 Shoulder2 Sleeve3 Length4
S 20" 16" 1612" 26"
M 21" 17" 17" 27"
L 22" 18" 1712" 28"
XL 23" 19" 18" 29"
2XL 24" 20" 1812" 30"

For a more accurate understanding of the fit, we suggest comparing these measurements with a garment you already own.
1/2 Chest - Lay the garment flat, start 1" below the armhole seam right where the armpit ends and measure across the chest from the right side to the left side.
Shoulder - Measure from the tip on one shoulder across to the tip of the other shoulder.
Sleeve - Measure from the center of the neck to the shoulder tip and down the sleeve to the cuff edge.
Length - Measure from the center of the neck seam down to the bottom hem.