Materials:
* Shell: ABS plastic
* Liner: Closed-cell EVA foam

Specs:
* Certification: CE EN 1385
* Weight: 454 g
* Vented: Yes
* Adjustment: DialFit adjustment
* Ear Coverage: No
* 6 ventilation/drain holes

Features:
* 6 ventilation/drain holes

Details:
* Protect nearly any adult with the same helmet. No more mixing and matching
* The ratchet-adjust DialFit system lets you custom fit the Havoc with the simple twist of a knob
* Fits head circumference 53-62 cm
* An adjustable chin strap ensures comfort and security
* Plush FIT pads in key contact points provide extra comfort
* Six ventilation/drainage ports let air in and water out
* ABS plastic shell is lightweight and durable
* Glued-in EVA foam liner offers excellent impact protection
* Meets CE 1385 standards for whitewater safety