M's Insulated Shirt Size Chart

1-Lenght
 2-Chest 3-Sleeve
S 29 22 26
M 29.5 23 26.5
L 30.5 24 27
XL 31.5 25 27.5
2XL 32.5 26.5 27.5
3XL 32.5 28
27.5
4XL 33.5 29.5
27.5
5XL 34 31
27.5
 

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