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

SizeHeightWeight
Infant Bunting 0-9 Months17"-29"7-22 lbs
0-6 Months17"-27"7-18 lbs
6-12 Months27"-31"18-22 lbs
12-18 Months31"-33"22-26 lbs
18 to 24 Months33"-35"26-30 lbs
Toddler 2-4T35"-41"30-38 lbs
Toddler 5-6T43"-47"40-50 lbs
Baby Costume Sizing Chart Diagram