What types of hard hats is not ANSI approved Class A Class B Class C or bump hats?

Hard hats that are not ANSI approved typically include those that do not meet the safety standards set by the American National Standards Institute (ANSI) or are intended for specific applications without certification. Examples include novelty hard hats, which are often used for decorative purposes and do not provide adequate protection, as well as certain types of industrial helmets that may not meet the necessary impact or electrical resistance criteria. Additionally, bump hats, while providing some protection against minor bumps, do not offer the same level of safety as ANSI-approved hard hats.