Quick Summary
This white OnBros adult bike helmet has an adjustable fit system for a stated head circumference of 56-61 cm. Listed features include an ABS shell, an EPS core, 14 vents, a soft liner and a chin pad. The listing names cycling and several other wheeled activities as uses.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Fit range | 56-61 cm head circumference. Compare this range with your measurement before choosing the helmet. |
| Adjustment | A rear adjustment dial and chin strap are described for adjusting the fit. |
| Construction | ABS shell and EPS core. |
| Ventilation and padding | 14 vents, a soft liner and a chin pad are listed. |
| Certifications | The listing states CPSC and CE certifications. Check the helmet’s markings and applicable requirements for your intended activity. |
| Color and quantity | White; one helmet. |
| Listed weight | 1.17 lb. |
Compatibility, Size and Fit
The size is identified as Medium, with a stated head circumference range of 56-61 cm. Measure your head and check that it falls within this range. The rear dial and chin strap allow adjustment, but the range alone does not establish a suitable fit for every head shape. Follow the manufacturer’s instructions for fit and strap positioning.
What Is Included
The listed quantity is one helmet. No additional accessories are specified.
What to Compare Before Buying
- Head fit: Compare your measured circumference with the 56-61 cm range and check that the helmet adjusts as directed.
- Intended activity: The listing names cycling, commuting, skateboarding, skating, scootering and longboarding. Confirm that the helmet’s markings and instructions cover your intended use.
- Certification and markings: Check the exact helmet’s labels and applicable requirements. Certification does not replace correct fit or safe use.
Before You Decide
Confirm the 56-61 cm fit range, intended activity and certification markings. Follow the manufacturer’s instructions for fit, use and care.










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