Approximate Measurements:
SMALL
Chest-32"-34"
Waist-29"-32"
Band-28"-34"
Length-29.5"
MEDIUM
Chest-34"-36"
Waist-31"-34"
Band-30"-36"
Length-30"
LARGE
Chest-36"-38"
Waist-33"-36"
Band-32"-38"
Length-30.5"
EXTRA LARGE
Chest-38"-40"
Waist-35"-38"
Band-34"-40"
Length-31"
2XL
Chest-40"-42"
Waist-37"-40"
Band-36"-42"
Length-31.5"
3XL
Chest-42"-44"
Waist-39"-42"
Band-38"-44"
Length-32"
Get more help with sizing here.