Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 5.00pm |

Giro Register II Helmet in Charcoal
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Experience refined recreation and elevated performance from the lightweight, ventilated and stylish Giro Register II MIPS Cycling Helmet.
Building on the success of the original Giro Register, the Register II MIPS Cycling Helmet brings premium road helmet styling and advanced ventilation to a lightweight, recreational helmet. Designed for comfort, safety, and versatility, this helmet features in-mold construction, an adjustable Roc Loc® Sport fit system, and deep internal channeling for superior airflow. Whether you're commuting, road cycling, or enjoying weekend rides, the Register II MIPS delivers best-in-class protection and performance.
Enhanced Protection with MIPS Technology:
- Multi-Directional Impact Protection System (MIPS) reduces rotational forces in certain impacts for added safety.
Lightweight In-Mould Construction:
- Polycarbonate shell fused with an EPS foam liner for a light, durable, and impact-absorbing design.
- Optimised ventilation system keeps the helmet cooler and lighter than traditional designs.
Superior Fit & Comfort:
- Roc Loc® Sport Fit System provides one-handed adjustability with a 7cm range for a secure and customised fit.
- Ponytail compatibility ensures comfort for all riders.
Maximum Ventilation & Cooling:
- 19 large vents and deep internal channelling promote efficient airflow, keeping your head cool on long rides.
Versatile & Stylish Design:
- Quick Link removable visor allows for easy customization, adapting to different riding conditions.
- Reflective rear decals enhance visibility for added safety in low-light conditions.
Lightweight, well-ventilated, and designed for all-day comfort, the Giro Register II MIPS Cycling Helmet is the ideal choice for recreational riders, commuters, and road cyclists.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £25 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
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ADULT SUPER FIT SIZE | CIRCUMFERENCE |
S | 51 - 55 cm |
M | 55 - 59 cm |
L | 59 - 63 cm |
XL | 63 - 65 cm |
ADULT SUPER FIT FULL FACE | CIRCUMFERENCE |
S | 51 - 53 cm |
M | 51 - 55 cm |
L | 55 - 59 cm |
XL | 59 - 63 cm |
ADULT UNIVERSAL | CIRCUMFERENCE |
Women Adult | 50 - 57 cm |
Unisex | 54 - 61 cm |
Extra Large | 58 - 65 cm |
YOUTH SIZE | CIRCUMFERENCE |
XS (Scamp Model) | 45 - 49 cm |
S (Scamp Model) | 49 - 53 cm |
XS (Dime Model) | 47 - 51 cm |
S (Dime Model) | 51 - 55 cm |
Universal Child | 47 - 54 cm |
Universal Youth (Ages 5+) | 50 - 57 cm |