Preemie
Newborn
0-3m
3-6m
6-9m
9-12m
Weight (lb)
Up to 5
5-9
9-12
12-16
16-20
20-24
Length (in)
Up to 17
Up to 18
18-23
23-26
26-28
28-32
Age
-
0-4 wks
 4-8 wks
8-20 wks
20-36 wks 
36-48 wks
12-18m
18-24m
1T
2T
3T
4T
5T
6T
Weight (lb)
24-27
27-30
24-27
27-30
30-35
36-40
40-46
46-53
Length (in)
29-31
31-33
29-33
33-36
36-39
39-42
42-45
45-48
 Age   
1 yr -1.5 yrs
1.5 yrs-2 yrs
1-2 yrs
2-3 yrs
3-4 yrs
4-5 yrs
5-6 yrs
6-7 yrs