Full brim hard hat with an unvented shell in HDPE, 4-point textile harness with ratchet wheel to adjust its headband size (52-63cm).  Non vented for increased protection against the elements.  It is designed to reduce the danger of contacts with conductors at higher voltage level (tested at 20.000 volts).
ANSI/ISEA Z89.1 Type I, Class E
Minimum order size 20 helmets.