Howard Leight Thunder T3 Black Plastic Model 1010970 Noise Blocking Dielectric Earmuffs Dielectric construction suitable for all workplaces, especially electrical environments Uniform headband pressure for all head sizes, providing better comfort for long-term wear Non-deforming outer headband withstands rough treatment in the toughest workplaces Quick-Click height adjustment remains fixed during wear Snap-in ear cushions make replacement quick and easy ANSI S3.19-1974, Noise Reduction Rating (NRR): 30 dB Product Description HLI1010970 Features: -Thunder Top-of-the-line protection and comfort in ear protection.. -Non-deforming comfort headband fits all head sizes Ventilated inner headband and soft pads for maximum comfort Quick-click height adjustmentDielectric design safe of electrical environments. -UNSPC CODE: 46181902. -Earmuffs & Bands Earmuffs Bands hearing protection earmuff ear muff muffs earband ear band earplug earplugs ear plug ear plugs. Product Type: -Ear Muffs. Type I: -Ear Muffs. Headband: -Yes. Noise Reduction Rating NNR: -30 db. Color: -Black. Quantity: -Single. Dimensions: Overall Product Weight: -0.84 Pounds. Product information Technical Details Manufacturer ‎Howard Leight by Sperian Part Number ‎HLI1010970 Item Weight ‎13.4 ounces Color ‎Black Style ‎Modern Material ‎Plastic Item Package Quantity ‎1 Usage ‎Dielectric