Specially treated products may be subject to additional requirements. Please check with your local authorities for any additional requirements that may apply.
Measure the circumference around the head, above the eyebrow and at the widest part of the head. Divide number by 3.14 for hat size.
OSFA | |
Hat Size | 6 5/8-8 |
Head Size | 20 7/8-25 1/8 |