Giro Men's Helmet Size Guide
| Size | Head Circumference (cm) |
| S | 52-55.5 |
| M | 55.5-59 |
| L | 59-62.5 |
| XL | 62.5-65 |
Giro Jackson, Giro's most popular helmet
The Giro Jackson MIPS Helmet Black is designed with the latest MIPS technology to ensure that your head is well protected in the event of an impact by reducing rotational forces. The Jackson MIPS Helmet also features a goggle retention strap on the back of the helmet to help keep your goggles in place, and the adjustable ventilation system allows you to customise the airflow on those warmer spring days.
Additional Details
In Form™ 2 Fit System
Passive Aggressive Venting System provides automatic airflow
Magnetic buckle
Removable goggle clip
Audio system compatible