The Ionos is the most technologically advanced road cycling helmet Giro has ever created. Or anyone else. Their revolutionary in-mold composite subframe (I.C.S.™) provides the strength to support 21 of the largest vents ever carved into a helmet. These massive vents, coupled with an intricate network of internal exhaust ports, create a cooling system they call Wind Tunnel™ ventilation, making Ionos the coolest, best-ventilated helmet anywhere… perfect for keeping riders comfortable, even on the hottest days and over the most tortuous climbs.

The Name
The name Ionos (pronounced eye-oh-nOs) refers to the Ionosphere, the uppermost reaches of the earth’s atmosphere, associated with auroras and radio waves. So what’s that got to do with bike helmets? Well, auroras are pretty amazing, and radio waves are an essential part of our lives. And when you think about it, those same words are perfect for a helmet called Ionos.

Strong
Just like every Giro helmet, they test Ionos for impact resistance, energy dissipation, roll-off, and a lot more. They also have the R&D horsepower to analyse rider feedback and lab data right in house in the quest to combine optimum fit and performance with the protective security riders need. Ionos represents the pinnacle of Giro’s work to date.

In-mold ™ Composite Sub-Frame (I.C.S.™)
It’s the secret behind Ionos’ secret—the unique ability to offer huge vents without compromising protection. The Ionos features a visible weave of composite reinforcement called In-mold Composite Sub Frame (I.C.S), which runs through the helmet’s liner and around the vents. By using these advanced materials, the sub-frame can be tuned to provide incredible structural support, impact dispersion, and
resistance to penetration.

In-Mold Construction
Ionos features In-mold construction—fusing the sleek, four-part outer shell with its impact-absorbing EPS liner—to create a single integral unit. The two materials are literally fused together, each reinforced by the other. This ‘exoskeleton’ allows Ionos to be lighter, more durable, and better-ventilated than traditional road helmets.

Wind Tunnel ™ Ventilation
The most consistent feedback received from professional riders is to make our helmets cooler. So they did: Ionos utilises their proprietary Wind Tunnel ventilation system, combining 21 active vents with internal exhaust channels that thrust cool, fresh air over and around the riders head while forcing heat and stale air out.

Super Fit Enginering ™
Giro’s proprietary three-size Super Fit system is based on “human scale factors” data and over 20 years of crafting helmets for the best bike riders in the world. The result is pure Skull Hugging Luxury™, a helmet that fits 98% of the worlds population right out of the box.

Roc Loc® 4
Giro’s Roc Loc 4 is the industry benchmark for adjustability, durability, and comfort. It offers full adjustment of the fit tension and the helmet’s vertical position, for a truly custom, glove-like fit.

Available to You
Head into your local Bike Hub store to own your own most technologically advanced road cycling helmet, click here to find your nearest Bike Hub.