Street Helmet Sizing Chart
| Helmet Size |
Circumference |
Hat Size |
| Extra Small |
20 5⁄8 to 21 1⁄4 inches |
6 5⁄8 to 6 3⁄4 inches |
| Small |
21 5⁄8 to 22 inches |
6 7⁄8 to 7 inches |
| Medium |
22 3⁄8 to 22 3⁄4 inches |
7 1⁄8 to 7 1⁄4 inches |
| Large |
23 1⁄8 to 23 1⁄2 inches |
7 3⁄8 to 7 1⁄2 inches |
| Extra Large |
24 to 24 3⁄8 inches |
7 5⁄8 to 7 3⁄4 inches |
| Extra Extra Large |
24 3⁄4 to 25 1⁄8 inches |
7 7⁄8 to 8 inches |
ATV Helmet Sizing Chart
| Helmet Size |
Circumference |
Hat Size |
| Youth Small |
19 1⁄4 to 19 3⁄4 inches |
6 1⁄8 to 6 1⁄4 inches |
| Youth Medium |
20 to 20 3⁄8 inches |
6 3⁄8 inches |
| Youth Large |
20 1⁄2 to 20 5⁄8 inches |
6 1⁄2 inches |
| Extra Small |
20 5⁄8 to 21 1⁄4 inches |
6 5⁄8 to 6 3⁄4 inches |
| Small |
21 5⁄8 to 22 inches |
6 7/8 to 7 |
| Medium |
22 3⁄8 to 22 3⁄4 inches |
7 1⁄8 to 7 1⁄4 inches |
| Large |
23 1⁄8 to 23 1⁄2 inches |
7 3⁄8 to 7 1⁄2 inches |
| Extra Large |
24 inches |
7 5⁄8 inches |
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