Child's Age	Size	Chest in inches
New Born	New Born	17 inches
3 To 6 Months	3- 6 Months	18 inches
6 to 12 Months	6- 12 Months	19 inches
1 to 2 Years	1 - 2	20 inches
3 to 4 Years	3 - 4	22 inches
5 to 6 years	5 - 6	24 inches

woman's size	Size
petite 2, 4	small
6, 8	meduim
10, 12	large
14, 16	xlarge