Product details
- Comparing actual head measurements with the size-specific chart.
- Checking the exact helmet model and supporting documents before activity use.
- Selecting a color/finish without assuming shared protective approval.
- Selected helmet described; confirm unit count.
- Spare pads, attachments and other accessories are not itemized.
What are the circumference ranges?
S 48–56 cm, M 52–59 cm and L 54–62 cm in detailed source data.
What does each size weigh?
Net S 281 g, M 322 g and L 374 g.
What are internal measurements?
S 24 × 15.5 × 10 cm, M 25.5 × 16.5 × 10.7 cm and L 26.5 × 18.5 × 11.3 cm, length × width × depth.
Is the shell ABS or polycarbonate?
The source conflicts: ABS, PC outside/EPP inside and polyester-exterior wording. Confirm actual construction.
Which colors or finishes are offered?
Yellow/blue/red gloss, black, pink, yellow, blue and red. Other labels do not prove a matte finish.
Is it approved for children or all sports?
Not established. Age and multi-activity descriptions are not supplied protective-approval evidence.
Is the model XD-9664 or XD-Q9664?
Both appear. Check actual model markings and supporting instructions.
What care and package details are supplied?
Clean after each use, inspect before use and store cool/dry. Unit count and extra accessories are not itemized.







