Chest Width 
Length at Back Sleeve
Body  Length
S
21" 
28.5"
19.5"
M
22.5"
29.5"
20.25"
L
24"
30.5"
21"
XL
25.5"
32"
21.5"
2X
27"
33.5"
22"
3X
28.5"
35"
22.5"
4X
 30"
36.5"
23"