Size Chest Body Sleeve
S 20.5" 28.5" 34.5"
M 21.5" 29.5" 35"
L 22.5" 30.5" 35.75"
XL 23.5" 31.5" 36.5"
2XL 25" 32.5" 37.5"
3XL 26.5" 33.5" 38"
4XL 28" 34.5" 39"
5XL 29" 35.5" 40"

Chest width measures from one inch below armhole
Body length measures from the highest shoulder point at the neck seam to the bottom edge seam
Sleeve length measures from the middle of the neck seam to the armhole