HELMET SIZING CHART
Be sure to measure around the largest diameter of your head, including the tips of your ears to ensure a proper fit. Remember, size conversions are approximate.
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Answer Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-5/8 thru 6-3/4 |
20 thru 20 1/2 |
X-Small |
| 6-7/8 thru 7 |
21-1/2 thru 22 |
Small |
| 7-1/8 thru 7-1/4 |
22-1/2 thru 22-3/4 |
Medium |
| 7-3/8 thru 7-1/2 |
23 1/4 thru 23 1/2 |
Large |
| 7-5/8 thru 7-3/4 |
24 thru 24-1/2 |
X-Large |
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Anvil Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
20-1/2 thru 21-1/4 |
X-Small |
| 6-1/2 thru 7 |
21-3/8 thru 22 |
Small |
| 7 thru 7-1/4 |
22-1/8 thru 22-3/4 |
Medium |
| 7-1/4 thru 7-1/2 |
22-5/8 thru 23-1/4 |
Large |
| 7-1/2 thru 7-5/8 |
23-5/8 thru 24-3/4 |
X-Large |
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Bell Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-5/8 thru 6-7/8 |
20-7/8 thru 21-5/8 |
Small |
| 7 thru 7-1/4 |
22 thru 22-7/8 |
Medium |
| 7-1/4 thru 7-1/2 |
22-5/8 thru 23-1/4 |
Large |
| 7-1/2 thru 7-3/4 |
23-5/8 thru 24-1/2 |
X-Large |
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Dyno Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-3/4 thru 6-7/8 |
21-1/4 thru 21-7/8 |
X-Small |
| 7 thru 7-1/8 |
22 thru 22-3/8 |
Small |
| 7-1/8 thru 7-1/4 |
22-3/4 thru 23-1/8 |
Medium |
| 7-3/8 thru 7-1/2 |
23-1/4 thru 23-3/4 |
Large |
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EBS Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-1/2 thru 6-3/4 |
20-1/2 thru 21-1/4 |
Small |
| 7 thru 7-1/4 |
21-3/8 thru 22-3/4 |
Medium |
| 7-3/8 thru 7-3/4 |
22-7/8 thru 23-7/8 |
Large |
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Ecko Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
19-3/8 thru 20-3/8 |
X-Small |
| 6-1/2 thru 6-3/4 |
20-1/2 thru 21-1/4 |
Small |
| 7 thru 7-1/4 |
21-3/8 thru 22-3/4 |
Medium |
| 7-3/8 thru 7-3/4 |
22-7/8 thru 23-7/8 |
Large |
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Fox Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-1/2 thru 6-5/8 |
20-1/2 thru 20-7/8 |
X-Small |
| 6-3/4 thru 6-7/8 |
21-1/4 thru 21-7/8 |
Small |
| 7 thru 7-1/8 |
22 thru 22-3/8 |
Medium |
| 7-1/4 thru 7-3/8 |
23-1/8 thru 23-1/4 |
Large |
| 7-1/2 thru 7-5/8 |
23-1/4 thru 24-3/4 |
X-Large |
| 7-3/4 thru 7-7/8 |
24-3/4 thru 25-1/4 |
XX-Large |
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GT Full Face Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 7 thru 7-1/8 |
22 thru 22-3/8 |
Small |
| 7-1/8 thru 7-1/4 |
22-3/4 thru 23-1/8 |
Medium |
| 7-3/8 thru 7-1/2 |
23-1/4 thru 23-3/4 |
Large |
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Hoffman Evel Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-1/2 thru 6-7/8 |
21 thru 21-1/2 |
Small |
| 7 thru 7-1/8 |
21-5/8 thru 22-1/4 |
Medium |
| 7-1/4 thru 7-1/2 |
22-3/8 thru 23 |
Large |
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Knucklebone Full Face Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
20-1/2 thru 21-1/4 |
X-Small |
| 6-1/2 thru 7 |
21-3/8 thru 22 |
Small |
| 7 thru 7-1/4 |
22-1/8 thru 22-3/4 |
Medium |
| 7-1/4 thru 7-1/2 |
22-5/8 thru 23-1/4 |
Large |
| 7-1/2 thru 7-5/8 |
23-5/8 thru 24-3/4 |
X-Large |
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Knucklebone Jumper Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-3/8 thru 7 |
21-1/4 thru 22 |
Small |
| 7 thru 7-1/4 |
22 thru 22-7/8 |
Medium |
| 7-1/4 thru 7-5/8 |
22-7/8 thru 23-5/8 |
Large |
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O'Neal WF-688 Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-5/8 thru 7 |
20-3/4 thru 21-5/8 |
X-Small |
| 7 thru 7-1/8 |
21-5/8 thru 22-3/8 |
Small |
| 7-1/8 thru 7-1/4 |
22-3/8 thru 23-1/4 |
Medium |
| 7-1/4 thru 7-5/8 |
23-1/4 thru 24 |
Large |
| 7-5/8 thru 7-3/4 |
24 thru 24-7/8 |
X-Large |
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Odyssey Apache Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-5/8 thru 7 |
20-3/4 thru 21-5/8 |
X-Small |
| 7 thru 7-1/8 |
21-5/8 thru 22-3/8 |
Small |
| 7-1/8 thru 7-1/4 |
22-3/8 thru 23-1/4 |
Medium |
| 7-1/4 thru 7-5/8 |
23-1/4 thru 24 |
Large |
| 7-5/8 thru 7-3/4 |
24 thru 24-7/8 |
X-Large |
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Pro Rider Helmet Sizing
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| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
19-3/8 thru 20-3/8 |
XXS thru XS |
| 6-3/8 thru 7-3/8 |
20-3/8 thru 22-7/8 |
SM thru MD |
| 7-3/8 thru 7-3/4 |
22-7/8 thru 23-7/8 |
LG thru XL |
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Protec Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
19-1/2 thru 20-7/8 |
X-Small |
| 6-1/2 thru 6-7/8 |
21 thru 21-1/2 |
Small |
| 7 thru 7-1/8 |
21-5/8 thru 22-1/4 |
Medium |
| 7-1/4 thru 7-1/2 |
22-3/8 thru 23 |
Large |
| 7-5/8 thru 7-3/4 |
23-1/8 thru 24-1/2 |
X-Large |
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Troy Lee Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6-1/2 thru 6-7/8 |
21 thru 22 |
X-Small to Small |
| 7- 7-3/8 |
22.4 thru 23.7 |
Medium to Large |
| 7-1/2 thru 7-3/4 |
23.7 thru 24.7 |
X-Large to XX-Large |
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TSG 1/2 Cut Helmet Sizing
|
| HAT SIZE |
MEASURED SIZE |
HELMET SIZE |
| 6 thru 6-3/8 |
19-1/2 thru 20-7/8 |
X-Small |
| 6-1/2 thru 6-7/8 |
21 thru 21-1/2 |
Small |
| 7 thru 7-1/8 |
21-5/8 thru 22-1/4 |
Medium |
| 7-1/4 thru 7-1/2 |
22-3/8 thru 23 |
Large |
| 7-5/8 thru 7-3/4 |
23-1/8 thru 24-1/2 |
X-Large |