Brand new, open box NRR rating of 31 dB, CSA class A Headband provides consistent pressure for comfort over long periods Dielectric wire headband reduces the wearer's exposure to electrical hazards Replaceable earcups are designed for long-lasting comfort Earcup pivot points tilt and rotate for comfort and efficiency With a noise reduction rating of 31 decibels and a CSA Class AL rating, these earmuffs are perfect for use in agriculture, food processing, sanitation engineering, inspection, and construction where hearing protection is required. Hearing protection should be worn around loud machinery and equipment to help prevent hearing loss or damaged eardrums. Non-Conductive, Dielectric Wire Headband The black color of these earmuffs allows for supervisors to quickly and easily conduct hearing protection compliance checks. These over-the-head earmuffs are made with a non-conductive, dielectric wire headband that is constructed to reduce the wearer's exposure to electrical hazards during use. The headband is built with a twin design to reduce heat buildup and provide a secure fit. Adjustability for a Customized Fit The replaceable earcups are filled with foam for long lasting comfort. These earcups form a tight seal over the ears to effectively block harmful noise. The earcups are also able to rotate, tilt, and adjust from pivot points, creating an ideal fit for each individual user. Prevent hearing damage in the workplace with these ergonomic earmuffs!