Newly re-designed Vertex Best helmet featuring a six-point mesh liner that conforms to the shape of the head for improved comfort.  Shock absorption is achieved through deformation of the outer shell. The helmet's unventilated shell protects against electrical hazards and molten metal splash.  Side slots for mounting hearing protection, inserts for accepting a VIZIR face shield, and slot for mounting a PIXA headlamp. ANSI Z89.1-2009 Type 1 Class E