Loading... Please wait...These MSA hard hats are the number one hard hat for most industrial applications. The shell is made with a durable injection-molded, high-density polyethylene. These MSA hardhats come with the Staz-On (pin-lock) suspension for superior head protection. In addition, this MSA cap is designed with an accessories slot to accommodate many add-on features. Complies with ANSI Z89.1, 2003, Type 1 Class E & G Standards