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

SizeSize/Age RangeChestHeightWeight
0-6 MonthsNewborn-6 months7.5124.5 oz
6-12 Months6 Months-12 Months9.5134.5 oz
12-18 Months12 Months-18 Months10.5144.5 oz
18-24 Months18 Months-24 Months11.5154.5 oz
Baby Sizing Chart Diagram