Giro Helmet Size Charts
To measure your correct helmet size, wrap a measuring tape around your head, keeping the tape just above the ears and level front to back.
Shop Giro Ski and Snowboard Helmets
| Adult Helmet Sizing |
Size (cm) |
Size (in) |
| S | 52 - 55.5 | 20.5 - 21.75 |
| M | 55.5 - 59 | 21.75 - 23 |
| L | 59 - 62.5 | 24.5 - 25.5 |
| XL | 62.5 - 65 | 24.5 - 25.5 |
| Youth Helmet Sizing |
Size (cm) |
Size (in) |
|
XS |
48.5 - 52 | 19.25 - 20.5 |
|
S |
52 - 55.5 | 20.5 - 21.75 |
|
M |
55.5 - 59 | 21.75 - 23 |
Description
The Giro Ratio Mips ski/snowboard helmet is all about function. With features typically found on premium helmets at a more affordable price, this helmet is perfect for those looking for performance above all else. Key features on this ski helmet include the advanced Mips technology for advanced impact protection, the adjustable climate control that lets you personalize each ride based on the weather, and the durable Hardshell Construction which provides another layer of protection.
Mips Gives You A Safe and Secure Layer of Protection
Reduces rotational impact forces, redirecting forces from crashes away from your head and protecting your brain.
Adjustable Climate Control
Stay perfectly comfortably no matter the weather with Thermostat Control Adjustable Venting. Open or close airflow channels on the go with ease, while the Stack Vent technology helps prevent goggle fog for clear views.
Hardshell Construction Keeps It Consistent
Hardshell Construction on Giro ski helmets provides solid, quality impact protection for long-term use. The durable outer shell will give you peace of mind as you race down the slopes.
Features
- Hardshell Construction provides impact-resistant protection for long term use, by attaching a comfortable EPS foam liner to a durable outer shell.
- In Form Dial Fit System allows you to adjust your helmet up to 6cm with the dial at the base of your helmet.
- Thermostat Control Adjustable Venting allows you to tune the amount of airflow within the helmet with a simple, low profile control button.
- Vertical Tuning accommodates different goggle and head shapes.
- MIPS helmet safety system
- Compatible with Aftermarket Giro Audio System
- Compatible with all Giro goggles










