Sizing chart

AGE SIZE HEIGHT WEIGHT
Newborn NB up to 20 inches up to 8lbs
0-3 months 0-3 21 - 24 inches 8 - 12lbs
3-6 months 3-6 24 - 26 inches 12 - 16lbs
6-12 months 6-12 26 - 30 inches 16 - 20lbs
12-18 months 12-18 28 - 32 inches 20 - 24lbs
18-24 months 18-24 32 - 34 inches 24 - 28lbs
2-3 years old  2T-3T 34 - 36 inches 28 - 32lbs
3-4 years old 3T-4T 36 - 39 inches  32 - 36lbs