***BOYS TYPICALLY HAVE LARGER NOGGINS, IF THE PERSON YOU ARE BUYING FOR IS IN BETWEEN SIZES BASED ON AGE WE RECOMMEND TO MEASURE FOR BEST FIT OR SIZE UP FOR LONGER WEARABILITY.

Small

15 inches - 18.5 inches

fits most infants 3-12 months

Medium

19 inches - 21 inches

fits most ages 1-6 years old

Large (Youth/Adult)

19.5 inches - 22 inches

fits most 7 years +