XXS- chest: 9-11", weight(lbs): 2-3
XS- chest: 11-13", weight(lbs): 4-6
S- chest: 13-16", weight(lbs): 6-11
M- chest: 16-19", weight(lbs): 11-16
L- chest: 19-21", weight(lbs): 16-25
XL- chest: 21-24", weight(lbs): 25-40
2X- chest: 24-27", weight(lbs): 40-50
2X/3X- chest: 27-30", weight(lbs): 50-60
3X- chest: 30-33", weight(lbs): 60-90