Size
head circumference
0-6M
15-17
38-43
6-12M
17-18
43-46
12-18M
18-19
46-48
12-24M
18-19
46-48
18-24M
18-19
46-48
Size
age
head circumference
XS
6-12 months
17-18
43.25-45.75
S
12-24 months
18-19
45.75-48.25
M
2T/3T
19-20
48.25-50.75
L
4T/5T
20-21
48.25-53.5

Measuring Tips

Wrap measuring tape around baby's/toddler's head at temples, just slightly above eyebrows. Back of measuring tape is around fullest part of baby's/toddler's head. Measurement in circumference corresponds to size