Polycarbonate helmet shell. Lightweight and superior fit thanks to advanced C.A.D technology. Integrated Quick-Release sun visor, adjustable on three levels. Rapidfire ™ visor mechanism for quickly changing the visor without tools. Removable and washable Nylex ™ lining, antibacterial and neutralizes unpleasant odors. Glass-Grove, special recess in the helmet for spectacle pilots.