The Aerohead™ Mips® helmet was designed in the wind tunnel, tested on the track, and has been proven with record-breaking times at the Tour de France and Ironman World Championships.Shield Type Vented eye shield by ZEISS®Magnetic lens anchor attachmentConstruction In-Mold polycarbonate shellVentilation 4 Wind Tunnel vents with internal channelingOver-brow ventilationFit System Roc Loc® 5 AirSuper Fit engineeringProduct Weight 450g (size Medium CPSC, CE)Certification Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and OlderE.U.: CE EN1078Highlights Super Fit™ engineeringVented eye shield made by ZEISS® Optics ZEISS® OpticseshieldMagnetic lens anchor attachmentIonic+™ anti-microbial paddingOverbrow VentilationSlimline webbing