Infant /Toddler
Size  Chest Waist Height
(in inches) (in inches) (in inches)
0-6 months 18" 18.5" up to 27"
6-12 months 19" 19" up to 29"
12-18 months 20" 19.5" up to 31"
18-24 months 20.5" 20" up to 33"
6-18 months 20" 20" 31"
12-24 months 20" 20" 33"
   
1/2 Toddler 20.5-21" 20" 33-35"
2 Toddler 21" 20" 35"
2/4 Toddler 21-23" 20-21" 35-41"
3/4 Toddler 22-23" 20.5-21" 38-41"
4/6 Toddler 23-25" 21-22" 41-47"