M's SS Shirt Size Chart

1-Length
 2-Chest 3-Sleeve
S 27.5 21 9
M 28.5 22 9.25
L 29.5 23 9.5
XL 30.5 24 9.75
2XL 31.5 25.5 10
3XL 32 27 10.25
 

*All measurements are in inches and were calculated on flat garments.