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Luminary Size Chart
SHRED. LuminaryMountain Bike Helmet Size Chart
| SIZE (Inches) | XS/M | M/XL |
| Head Circumference | 20 ¾ - 22 ½ | 22 ½ - 24 |
| SIZE (cm) | XS/M | M/XL |
| Head Circumference | 53-57 cm | 57-61 cm |
 MEASUREMENT GUIDE Use a tape measure to find your head circumference. You should measure from the mid of the forehead above the ears to the back of the head. |
NOT THE RIGHT SIZE OR COLOR?
No problem, we offer free size exchanges for 100 days and we have free return service on all orders.