Size 73=6M-12M
Pants length: 45 cm, waist*2: 19 cm, suggest age: 6-12 months, suggest length: 65-75 cm;

Size 80=18M
Pants length: 48 cm, waist*2: 19 cm, suggest age: 18 months, suggest length: 75-85 cm;

Size 90=2T
Pants length: 51 cm, waist*2: 20 cm, suggest age: 2 years old, suggest length: 85-95 cm;

Size 100=3T-4T
Pants length: 55 cm, waist*2: 20 cm, suggest age: 3-4 years old, suggest length: 95-105 cm;

Size 110=5T
Pants length: 59 cm, waist*2: 21 cm, suggest age: 5 years old, suggest length: 105-115 cm;

Size 120=6T-7T
Pants length: 63 cm, waist*2: 22 cm, suggest age: 6-7 years old, suggest length: 110-120 cm;

Size 130=8T
Pants length: 68 cm, waist*2: 22 cm, suggest age: 8 years old, suggest length: 120-130 cm;

Note:1cm=0.39 inch & 1inch=2.54cm
Please allow 1-3 cm differences due to manual measurement.
Please choose the appropriate size to buy based on your baby's actual height.
Babies are different in age and height. Fat babies please take the bigger size.