What size helmet do I need?

The size helmet a person needs depends on the size of their head. Helmet sizes are determined by the circumference of the head in inches or in centimeters. An approximate size can also be determined by considering a person's hat size.

Helmet sizes vary slightly, depending on the manufacturer. While a hat size of 6 1/4-6 1/2 may equal a size "Small" helmet from one manufacturer, it could be a size "Medium" with another. Checking size charts to ensure the correct size is purchased is essential. It's also important to measure the circumference of the head an inch above the eyebrows. Scull caps are available for those who are between sizes.