Part of the 3M™ Pro Series Safety Products line, this hard hat is designed for the way pros think, the way they shop and the way they work. 3M™ Hard Hats are engineered to provide comfort, protection, balance, and stability to help keep DIYers and professionals safe. The 3M™ Full Brim Non vented Hard Hat includes a ratchet adjustment for custom, on head sizing. The suspension system sits lower on the head to reduce pressure points and increase security. It features a smooth turning 4 point ratchet suspension system that provides optimized comfort with 3 levels of height adjustment. The full brim shell protects ears and neck from UV rays. This hard hat meets requirements of ANSI/ISEA Z89.1-2014 Type 1, Dielectric Class G and E & CSA Z94.1-2015 Type 1 Class G and E.