MSA hard hats with ratchet suspension meet all of the requirements of the American National Standards Institute (ANSI) Z89.1-2014. These hard hats are considered Type I, Classes E (Electrical) and G (General). This is a top selling hard hat that features an easy-to-use, fast-to-adjust suspension with a lightweight, polyethylene shell. This hat is balanced on the head with nylon fabric suspension straps and they are popular in industries such as construction work, trimming tree branches, and overhead electrical hazards.