Pronounced "eye-oh-nos" after the Ionosphere, the uppermost reaches of the earths atmosphere.

21 vents with Wind Tunnel technology creates a helmet 15% more cooler than than the market leading Atmos!

In-mold Composite sub frame runs through the helmet's liner and around the vents for structural support, impact dispersion and resistance to penetration.

Internal ventilation channels throughout the helmets

 Available in:  Blue/White (M-L), Matte Black/Red (M-l), Matte Black/Gold (M-L), White/Silver and Livestrong Black/Yellow

In-Mold construction

Polycarbonate shell

EPS liner

X-Static padding

Roc-Loc 4

21 vents

Sizes:

Small: 51-55cm

Medium: 55-59cm

Large: 59-63cm