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HJC F 70 Full Face Helmet - Stone Grey
(Product No.: BB-107H110.09)
HJC F 70 Full Face Helmet - Stone Grey
- HJC's new stylish fiberglass sports touring helmet with integrated sun visor
- Elegant appearance due to progressive shell design.
- Innovative and lightweight fiberglass fabric composite shell: excellent fit and high comfort thanks to advanced CAD technology.
- "ACS" - Advanced Channeling Ventilation System: The effective air circulation from the front to the back dissipates heat and moisture upwards and outwards.
- Sun Visor with Wider Field of View: Better peripheral vision, reducing eye strain and providing excellent blocking of sunlight. Anti-fog and scratch-resistant coating.
- Removable and washable, moisture-wicking Supercool lining made of trend-setting, antibacterial and odorless fabric. Overhead and cheek pads are removable and washable. Cheek pads can be used for all helmet sizes in different strengths.
- Smooth and easy to use visor locking system.
- Spectacle wearer friendly.
- An anti-fog disc is included in the scope of delivery.
- The helmet is set up for HJC's own communication systems SMART HJC 10B and 20B Bluetooth as standard.
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HJC Size Chart
HJC offers motorcycle helmets and bicycle helmets with partly different size ranges. The categories are therefore listed separately. Individual models may differ from the general reference chart; product-specific sizing always takes priority.
Motorcycle helmets – general HJC reference chart
Measure the head circumference with a flexible measuring tape around the head. For motorcycle helmets, HJC recommends measuring approximately 2.5 cm above the eyebrows.
| Size | Head circumference (cm) | Hat size | Head circumference (inches) |
|---|---|---|---|
| 3XS* | 50–51 | 6 1/4 – 6 3/8 | 19 3/4 – 20 1/8 |
| 2XS | 52–53 | 6 1/2 – 6 5/8 | 20 1/2 – 20 7/8 |
| XS | 54–55 | 6 3/4 – 6 7/8 | 21 1/4 – 21 5/8 |
| S | 55–56 | 6 7/8 – 7 | 21 5/8 – 22 |
| M | 57–58 | 7 1/8 – 7 1/4 | 22 3/8 – 22 7/8 |
| L | 58–59 | 7 1/4 – 7 3/8 | 22 7/8 – 23 1/4 |
| XL | 60–61 | 7 1/2 – 7 5/8 | 23 5/8 – 24 |
| 2XL | 62–63 | 7 3/4 – 7 7/8 | 24 3/8 – 24 3/4 |
| 3XL | 64–65 | 8 – 8 1/8 | 25 1/8 – 25 1/2 |
| 4XL | 66–67 | 8 1/4 – 8 3/8 | 26 – 26 3/8 |
| 5XL | 68–69 | 8 1/2 – 8 5/8 | 26 3/4 – 27 1/8 |
* According to HJC, 3XS is available for the C10 as a youth size.
HJC Y10 – youth sizes
| Size | Head circumference (cm) |
|---|---|
| YS | 48–49 |
| YM | 50–51 |
| YL | 52–53 |
Bicycle helmets – model-specific sizing
HJC Sports size ranges vary between certain model generations, especially for size L. The official model-specific measurements are therefore listed separately.
| Model | S – head circumference (cm) | M – head circumference (cm) | L – head circumference (cm) |
|---|---|---|---|
| Atara | 51–56 | 55–59 | 58–61 |
| Bellus | 51–56 | 55–59 | 58–61 |
| Bellus 2 | 51–56 | 55–59 | 58–63 |
| Calido | 51–56 | 55–59 | 58–63 |
| Coban | 51–56 | 55–59 | 58–63 |
| Crosser | 51–56 | 55–59 | 58–63 |
| Furion 2.0 | 51–56 | 55–59 | 58–61 |
| Furion 3 | 51–56 | 55–59 | 58–63 |
| Gleo (Kinder / Kids) | 49–55 | – | – |
| Ibex 2.0 | 51–56 | 55–59 | 58–61 |
| Ibex 3 | 51–56 | 55–59 | 58–63 |
| Route | 51–56 | 55–59 | 58–63 |
| Valeco | 51–56 | 55–59 | 58–63 |
| Valeco 2 | 51–56 | 55–59 | 58–61 |
Safety note: A size chart is a reference only. A helmet must fit firmly and evenly around the head, must not move out of position and should not create problematic pressure points. HJC warns that wearing the wrong helmet size can increase the risk of injury. Always try the helmet on and follow the product-specific fitting and safety instructions.
Updated: 11 August 2026. Basis: official HJC Europe motorcycle helmet size chart and proper-fit guidance, plus official HJC Sports product pages for the bicycle helmet models listed above.