Pyramex Sleek Shell Cap Style 4 Point Ratchet Suspension is a line of safety helmets that provide solid head protection and impact/penetration resistance, with a durable shell constructed from High Density Polyethylene materials. This Pyramex Helmets features a ridgeless low pro?le design, with a no-rain trough that prevents pooling of liquids. This construction helmet style features a ratchet suspension that is easy to adjust and allows the wearer to modify the fit while wearing the hard hat with just the twist of a knob. The Pyramex Sleek Shell Helmet is ideal for linemen and other electrical workers, as it meets ANSI Class E Standards. This hard hat is comfortable, too, with a soft brow pad absorbs perspiration. Replacement suspensions are available. This durable helmet meets ANSI Z98.1-2009 Standards, Type I, Class, C, G, and E.