Skullgard Hard Hat with with Fas-Trac Ratchet SuspensionSkullgard"s heavy-duty construction makes it the clear choice for working in high-temperature environments where falling objects can be a problem. It"s perfect for workers in steel mills and other heavy industries. Skullgard Headwear meets or exceeds Type I Helmet (top impact) requirements in ANSI Z89.1-2003, Class G.