Men
Size Chest Waist
XS 32 26
S 34 28
M 38 32
M 40 34
L 42 36
L 44 38
XL 46 40
XL 48 42
XXL 50 44
XXL 52 46
3XL 54 50
3XL 56 52
4XL 58 54
4XL 60 56

How to Measure Men's Sizes:

Measuring Guidelines for Men Chest With arms relaxed at sides, measure directly under your armpits and around the fullest part of your chest and shoulder blades. Keep tape measure parallel to the floor.
Waist Measure across your natural waist, at the point where you usually wear your pants. Keep tape measure comfortably loose and parallel to the floor.