Manufactured to EN166-1-39B. Clear Polycarbonate visor, 230mm. Fields of use: Polycarbonate visor offers high resistance to heavy impact. A robust, heavy-duty, helmet mounted faceshield with hearing protection compatibility. Compatible with a wide range of helmet designs (size, shape and geometry). Visor fixing method is secure and allows easy visor replacement. Benefits: It gives maximum protection, allowing full unrestricted head movement. VISOR ONLY.