the 3M™ 5F-11 face shield is a clear curved polycarbonate face shield with an optical class 1 anti-fog coating; thanks to the snap function, the face shield can be quickly and easily attached to the face shield holder; the face shield provides protection against high-velocity particles of medium energy (120 m/s), class B; FH1 holder and P3EV adapter are required for attachment to a 3M helmet; shield is compatible with G3000, G3501, H-700 series helmets and G500 series sets