Sizes	Description	Head Cap Sizing Fits Head Circumference (Range)
B	Baby	14.2-15.4” (36-39cm)
I	Infant	15.4-16.9” (39-43cm)
S	Child	16.9-18.5” (43-47cm)
S	Small	18.5-20.1” (47-51cm)
M	Medium	20.1-22.1” (51-56cm)
L	Large	22.1-24.1” (56-61cm)