ProTec Youth Helmets Size Chart
| Junior Helmet Sizing | Head Circumference (CM) | Head Circumference (IN) |
|---|---|---|
| XXX-Small | 47 - 49 | 18.5 - 19.3 |
| XX-Small | 49 - 51 | 19.3 - 20.0 |
| X-Small | 52 - 54 | 20.5 - 21.3 |
| Small | 54 - 56 | 21.3 - 22.0 |
| Junior Helmet Sizing | Head Circumference (CM) | Head Circumference (IN) |
|---|---|---|
| XXX-Small | 47 - 49 | 18.5 - 19.3 |
| XX-Small | 49 - 51 | 19.3 - 20.0 |
| X-Small | 52 - 54 | 20.5 - 21.3 |
| Small | 54 - 56 | 21.3 - 22.0 |