MALE Size Guide
Small - Chest 36"
Medium - Chest 38"
Large - Chest 40"
X-Large - Chest 44"
XX-Large - Chest 46"
FEMALE Size Guide
X-Small(8) - Chest 30-32"
Small(10) - Chest 32-34"
Medium(12) - Chest 34-36"
Large(14) - Chest 36-38"
X-Large(16) - Chest 38-40"