Those products designated as hard hats meet the requirements of the American National Standard for Industrial Head Protection ANSI Z89.1-2003, Type I, Class C, E and G. These products provide limited protection only. Misuse or failure to follow warnings and instructions may result in serious personal injury or death. For proper use, see supervisor, instructions, and warnings, or call 3M OH&ESD Technical Service 1-800-243-4630.