- Measure the circumference of the head, just above the ears
|Circumference (in)||Circumference (cm)|
|S||18.05" - 21"||48cm - 53cm|
|M||21" - 23"||54cm - 58cm|
|L||23" - 25"||59cm - 63cm|
|One Size Fits Most||18.05" - 25"||48cm - 63cm|
Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.