The C4 Pro has a DFP (Direct Fiber Processing) fiberglass outer shell and has been extensively tested in SCHUBERTH's own wind tunnel. Including Pinlock® 120 anti-fog visor. Polycarbonate visor with optical visibility class 1 (no distortion), quickly exchangeable through the Quick-Release System. Integrated sun visor made of polycarbonate, anti-scratch, 80% tinted. + -85dB at 100 km / h on a naked motorcycle. Seamless inner lining provides extra comfort and does not create annoying pressure points. Coolmax® inner lining: Antibacterial, removable and washable (Öko-Tex 100 inspection). Prepared for wearing (sun) glasses. The complex Multi-Channel ventilation system provides the necessary ventilation in the helmet. Equipped with an integrated antenna, two speakers and a microphone as standard to build in the optionally available SC1 communication system. Micro Lock quick release, adjustable on both sides of the chin strap. ECE-R 22.05 approved.