Quick Summary
The SIFVO road bike helmet is an adjustable cycling helmet for head sizes 55-58 cm. It combines a PC outer shell with an EPS core, a magnetic quick-release buckle and a flexible adjustment dial for fit control.
It is described as weighing 280 g and using 14 airflow vents with integrated insect mesh. The soft liner is removable for cleaning.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Road bike helmet for cycling use. |
| Brand | SIFVO. |
| Size range | 55-58 cm head circumference, so fit should be checked against the rider’s head measurement. |
| Weight | 280 g, which is useful when comparing similar helmets. |
| Shell and core | PC outer shell with EPS core. |
| Buckle | Magnetic quick-release buckle for one-handed fastening and release. |
| Ventilation | 14 airflow vents with integrated insect mesh. |
| Liner | Soft liner that is removable for cleaning. |
What to Compare Before Buying
- Head size: This helmet is for 55-58 cm. Measure head circumference before choosing.
- Fastening style: The magnetic quick-release buckle suits buyers who want a different fastening feel from a standard buckle.
- Ventilation: 14 vents with insect mesh may matter if airflow is important on longer rides.
- Cleaning: The removable liner is worth checking if easy cleaning matters after regular use.
Choosing the Correct Version
This is the 55-58 cm version, so the main choice is whether that size range matches the rider. Check the head circumference carefully before choosing an offer.
Before You Decide
Confirm the 55-58 cm size range, the 280 g weight and the magnetic buckle setup match your needs. If a different head size is required, choose another version before placing an order.
Helmet Fit and Safety Checks
Before riding, check for a safety-standard marking applicable to cycling in your intended market, and follow the maker’s fitting and adjustment instructions. A stated size range alone does not establish a correct fit, so check that the helmet can be positioned and retained as instructed.









