Description Optime over-the-head earmuffs feature double-shell technology to provide effective hearing protection. For noise levels up to 101 dBA, these over-the-head earmuffs provide effective hearing protection. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. Attributes 3M personal protective equipment sold through Shop3M.com is only intended for US occupational workplace use. This 3M personal protective equipment must be used in compliance with the Occupational Safety and Health Administration (OSHA) Personal Protective Equipment (PPE) standard (29 CFR 1910.132) and all other applicable health and safety standards, as well as all user instructions, warnings and limitations accompanying each product. It is essential that all product user instructions and government regulations on the use of each product be followed in order for the product to help protect the wearer. Misuse of personal protective equipment may result in injury, sickness, or death. For correct product selection and use, individuals should consult their on-site safety professional or industrial hygienist. For additional product information, visit www.3M.com/PPESafety. Product Details Color Black/Red Dielectric Yes Hearing Protection Style Over the head Material ABS Noise Reduction Rating 30 Decibel Product Type Earmuffs Size One Size Fits Most
