Sizing

Men's/Unisex Size Chart Chest
S - Small 34-37"
M - Medium 38-41"
L - Large  42-45"
XL - Extra Large 46-49"
XXL - Double Extra Large 50-53"
Women's Size Chart Fits Sizes
XS - Extra Small 0-2
S - Small  2-4
M - Medium 6-10
L - Large  10-14
XL - Extra Large 14-18
XXL - Double Extra Large 18-20