Fibre-Metal cap style hard hats have an advanced thermoplastic that keeps them a leader in head protection. There is a combined protective performance with comfort that reduces risk while improving productivity. There is a smooth crown design that eliminates the risk of an impacting object being trapped by ribs, ridges, or slots. These hats are SEI certified to meet ANSI Z89.1-2003, Type I, Class E, G, or C.