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| Hat Size | Circumference | Helmet Size |
| 6 1/2 - 7 1/8 | 20 1/2 - 22 1/2 inches | Small |
| 6 7/8 - 7 1/2 | 21 1/2 - 23 1/2 inches | Medium |
| 7 1/8 - 8 3/4 | 22 1/2 - 24 1/2 inches | Large |
| 7 3/4 - 8 1/4 | 24 1/2 - 26 1/2 inches | X-Large |
| 11-14 inches | Junior |
| 14-18 inches | Senior |
| Junior Sizes | Senior Sizes | ||
| Chest Measurement | Size | Chest Measurement | Size |
| (inches) | (inches) | ||
| 20-22 | XS | 30-34 | S |
| 22-24 | S | 34-38 | M |
| 24-28 | M | 38-42 | L |
| 28-30 | L | 42-44 | XL |
| Inches | Size |
| 7 1/2 | Youth Small |
| 8 1/2 | Youth Medium |
| 9 1/2 | Youth Large |
| 10 1/2 | Junior Small |
| 11 1/2 | Junior Medium |
| 12 1/2 | Junior Large |
| 13 1/2 | Senior Small |
| 14 1/2 | Senior Medium |
| 15 1/2 and above | Senior Large |
| Inches | Size |
| 9 | Small |
| 11-13 | Medium |
| 14-15 | Large |
| 16-17 | X-Large |
| Inches | Size |
| 9-10 | Youth |
| 11-13 | Junior |
| 14-16 | Senior |
| Waist Size | Approx. | European | Standard |
| (inches) | Height | Size | Size |
| 17-19 | 3'4" to 3'7" | Jr 100-110 | Youth X-Small |
| 20-23 | 3'8" to 4'3" | Jr 120-130 | Youth Small |
| 24-26 | 4'4" to 4'11" | Jr 140-150 | Youth Medium |
| 27-29 | 5'0" to 5'5" | Jr 160-180 | Youth Large |
| 29-30 | 5'6" | Sr 46 | Senior Small |
| 31-32 | 5'6" to 5'8" | Sr 48 | Senior Small |
| 32-33 | 5'8" | Sr 50 | Senior Medium |
| 34-35 | 5'10" | Sr 52 | Senior Medium |
| 36-38 | 6'0" | Sr 54 | Senior Large |
| 39-42 | 6'2" | Sr 56 | Senior XL |
| 42-44 | 6'2" | Sr 58 | Senior XL |
| 44-46 | 6'4" and over | Sr 60 | Senior XXL |
| Inches | Size |
| 7 | Youth Small |
| 8 | Youth Medium |
| 9 | Youth Large |
| 10 | Junior Small |
| 11 | Junior Medium |
| 12 | Junior Large |
| 14 | Senior Small |
| 15 | Senior Medium |
| 16 | Senior Large |
| 17 | Senior X-Large |