The below size chart is provided by LS2 for their helmets
| Size | Head (inches) | Head (cm) |
| XS | 20 7/8 – 21 1/4 | 53-54cm |
| Small | 21 5/8 – 22 | 55-56cm |
| Medium | 22 1/2 – 22 7/8 | 57-58cm |
| Large | 23 1/4 – 23 5/8 | 59-60cm |
| XL | 24 – 24 3/8 | 61-62cm |
| XXL | 24 3/4 – 25 1/4 | 63-64cm |
| XXXL | 25 5/8 – 26 | 65-66cm |
| XXXXL | 26 3/8 – 26 3/4 | 67-68cm |
Measuring your head for helmet fitment is the right place to start, but it is only a guideline. Different shapes of heads might require a slightly smaller or larger helmet in any given model.
A helmet should be as snug as possible without being so tight that it causes discomfort or headache.
Need help choosing the right shape and size helmet for your own noggin?
Learn about the LidPicker!