Giro Adult Helemt Sizing
|X Large||24.5-25.5"||62.5-65 cm|
The modern profile of the new Jackson helmet utilizes the new Passive Aggressive Venting system, inspired by the aerodynamic airflow of high-end autos. The discreet yet powerful system effectively manages airflow and temperature while in-motion riding, hiking or standing static. The overall look is finished with a slight brim and subtle lines for Seamless Compatibility with Giro goggles.Read more
Multi-Directional Impact Protection System (MIPS®) is a step forward in helmet design. There are three main components to a MIPS-equipped helmet: the interior foam liner, the Low Friction Liner and an elastomeric attachment system between them. In an angled impact, the elastomeric attachment system stretches to allow the foam liner to rotate independently around your head. The goal of this technology is to further reduce rotational forces.
In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets.
In Form 2 Fit System
The In Form 2 Fit System is lighter and lower-profile than the original, and easier to dial in a custom fit in seconds even with gloves on. An improved dial design provides up to 6cm of adjustment plus enhanced stability.
Stack Vent Technology
Our Stack Vent was developed based on research showing the majority of warm air that can cause fogging comes from the goggle's center top vent. Aligning the Stack Vent in the helmet with the center vent of the goggle helps keep it clear and fog-free.
For optimal performance of both helmets and goggles, Giro products are designed to work together, ensuring a seamless interface between helmet and goggle for an exceptional fit and dependable, worry-free function.
Easy to adjust and get the perfect fit. Efficient venting keeps you warm on the cold days, yet cool on those warm spring days. Fits so well with my Giro goggles. The magnetic strap makes it so easy, you can do it with mittens on!
This helmet has been my favorite helmet ever. Ive been through about 5 different ones and this one feels good, fits and protects. If your looking for a top of the line helmet this is it!
Super lightweight and great fit. I am 8 years old and a size small fits perfectly. I love this helmet.
So light, comfy, warm, and of course reliable when you need it most. I recommend this product to anyone and everyone.
and I've owned a few! The fit of the Jackson is awesome, it can by fine tuned with the easy adjustment in the back of the helmet, but the medium size fits me perfectly. I love the MIPS technology, feel very safe and protected on the slopes, and the technology doesn't come at a huge price with the GIRO products, compared to other brands. The goggle/helmet interface is awesome...no gaper gap with this helmet, and no snow or air giving you brain freeze. This is definitely the best helmet I have ever owned. Very cool look too!
This helmet will end up being your go to for everyday riding, whether you're rippin big lines in the backcountry or cruising hot laps in the resort this is your helmet. Secure, comfortable, and stylish!