Size Chart: One-Piece Bathing Suit

Size
 Child's Weight 
 One-Piece Length
3-6M 11-16 lbs 14.6 in
6-12M 16-20 lbs 15.6 in
12-18M 20-25 lbs 16.7 in
18-24M 25-30 lbs 17.5 in
2/3T 30-36 lbs 18.1 in
4/5T  36-41 lbs 19.1 in
5/6T 41-50 lbs 20.5 in