| Size | Head Circumference (cm) | Adjustable Fit Range |
|---|---|---|
| 9TWENTY (One Size) | 56.8 – 60.6 | Adjustable Strap (±2 cm) |
| 9TWENTY Small | 53.9 – 57.7 | Adjustable Strap (±2 cm) |
| Size | Head Circumference (cm) | Adjustable Fit Range |
|---|---|---|
| 9TWENTY (One Size) | 56.8 – 60.6 | Adjustable Strap (±2 cm) |
| 9TWENTY Small | 53.9 – 57.7 | Adjustable Strap (±2 cm) |