| Adult
Sizing Chart: Vapor, Charger, Velocity |
| Impact Racing Size: |
Small |
Medium |
Large |
Extra Large |
| Hat Size Equivalent: |
6-7/8 to 7 |
7-1/8 to 7-1/4 |
7-3/8 to 7-1/2 |
7-5/8 to 7-3/4 |
| Inch Size Equivalent: |
21-5/8 to 22 |
22-1/2 to 22-3/4 |
23-1/4 to 23-5/8 |
24 to 24-1/2 |
| CM Size Equivalent: |
55 to 56 |
57 to 58 |
59 to 60 |
61 to 62 |
| |
| Youth
Sizing Chart: Lil' Champ |
| Impact Racing Size: |
Small, Two Inserts |
Medium, One Insert |
Large, No Inserts |
| Hat Size Equivalent: |
6-1/8 to 6-1/4 |
6-3/8 to 6-1/2 |
6-5/8 to 6-3/4 |
| Inch Size Equivalent: |
19 to 19-1/4 |
19-1/2 to 20 |
20-1/2 to 21 |
| CM Size Equivalent: |
49 to 50 |
51 to 52 |
53 to 54 |
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