Size Chart

Size Chart   XS (4/5)  S (6/7)  M (8/9)  L (10)  XL (12) 
XXS (2/3) 
 
Chest (circumference) 21" 23" 24-25" 26-27"" 27-28" 28-29"
Height 35-38" 39-44" 45-50" 51-53" 54-56" 57-59"
Weight 28-34 lbs 35-44 lbs 45-59 lbs 60-69 lbs 70-87 lbs 87-100 lbs