When trying to decide between two sizes, choose the larger size for a better fit.

SizeSize/Age RangeChest (Width)Height (Torso)Weight
0-6 MonthsNewborn-6 months10"16"12.5-16.5 lbs.
6-12 Months6 Months-12 Months10.5"17.25"20.5-24.5 lbs.
12-18 Months12 Months-18 Months11"18.25"24.5- 27.5 lbs.
18-24 Months18 Months-24 Months11.5"19.25"27.5-30 lbs.
Baby Sizing Chart Diagram