* Lightweight fiberglass shell construction * Efficient aerodynamics developed from wind-tunnel tests. * Cooling ventilation system from 20 high-flow intake ports & 6 exhaust vents. Article: Troy Lee Designs D3 Fiberlite Anarchy Downhill Helmet, black-white-red, Size M Article: Troy Lee Designs D3 Fiberlite Anarchy Downhill Helmet, black-white-red, Size M, black-white-red, Size M