High-density polyethylene (HDPE) shell dissipates impact energy Shock-absorbing 6-point suspension with adjustable polyester textile crown straps Pivoting wheel ratchet adjustment easily fits over the nape of the neck for a secure fit Brushed nylon backed foam sweatband Universal slots to accept various accessories Packed ready-to-wear with no assembly required Complies with ANSI/ISEA Z89.1-2009 standard for Type I, Class G