XS
S
M
L
XL
2XL
Chest (in)
29-31
30-32
34-36
38-40
42-44
46-48
Waist (in)
28-30
32-33
33-34
36-38
40-42
Measure under arms around the fullest part of the chest. Be sure to keep tape level across back and comfortably loose.