EVOGuard®C4 MAX industrial visor is compatible with JSP EVOGuard® face protection systems and EVO® helmets, excluding the EVO®6100 series; JSP EVOGuard visor can also be used with JSP half masks, respirators, prescription glasses and Sonis® helmet-mounted headphones; optical class 1 offers panoramic vision suitable for all-day wear; impact protection A when worn on a helmet; splash protection; length: 21.5 cm