M's Fly Fishing Shirt Size Chart

1-Length
 2-Chest 3-Sleeve
S 27.75 21 25 1/8
M 28.5 22 25.75
L 29.25 23.5 26 3/8
XL 30 25 27
2XL 30.75 26.5 27 5/8
3XL 31.5 28 28.25
 

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