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 |
10% off
Giro Jackson, Giro's most popular helmet
The Giro Jackson MIPS Helmet employs an evolutionary profile to keep you protected and comfortable. Giro Jackson manages airflow with the Passive Aggressive Venting System, a design that allows variable airflow depending on your activity level. Inspired by the aerodynamic airflow of high-end cars, Giro Jackson will surely keep you comfortable. An in-mould construction coupled with MIPS® technology provides high-end protection in a lightweight package. The In Form™ 2 Fit System and On-the-fly Vertical Tuning system provide a fully customisable fit for every rider, making the Giro Jackson MIPS Helmet Giro's most popular model.
Additional Details
In Form™ 2 Fit System
Passive Aggressive Venting System provides automatic airflow
Magnetic buckle
Removable goggle clip
Audio system compatible