SIZEXSSMLXLXXL
Chest 32-34"
35-37"
38-40"
41-43"
44-46"
47-49"
Waist 26-28" 29-31" 32-34" 35-37" 38-40" 41-43"
Arm Length 31-32" 32-33" 33-34" 34-35" 35-36" 36-37"

If that chart didn't help you at all, here are some of our friends wearing our shirts with their measurements.

SIZEHEIGHTWEIGHTPANTCHESTPHOTO
Zach XS 5'6" 140 28" 35" View
Noah XS 5'9" 130 29" 33" View
William M 5'10" 185 31" 41" View
Josh L 6'1" 210 34" 43" View

Still not sure what size you need? Email us.