Size Charts for Shred Helmets
Men's Helmets
| Helmet Model | XXS-XS | XS-S | M-L | M-XL |
| Brain Bucket | 51-53cm | 54-56cm | 56-58cm | - |
| Slam Cap | - | 53-57cm | - | 57-61cm |
Women's Helmets
| Helmet Model | XS-S | M-XL |
| Mega Brain Bucket | 53-56cm | 57-60cm |
| Helmet Model | XXS-XS | XS-S | M-L | M-XL |
| Brain Bucket | 51-53cm | 54-56cm | 56-58cm | - |
| Slam Cap | - | 53-57cm | - | 57-61cm |
| Helmet Model | XS-S | M-XL |
| Mega Brain Bucket | 53-56cm | 57-60cm |