Size Weight Length Chest Waist
0-3M 7-12lbs 18-23" 16-17" 16.5-17.5"
3-6M 12-17lbs 23-27" 17-18" 17.5-18.5"
6-12M 17-22lbs 27-29" 18-19" 18.5-19.25"
12-18M 22-27lbs 29-31" 19-20" 19.25-20"
18-24M 27-30lbs 31-33" 20-20.5" 20-20.25"