HLI1010928 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. -Noise Blocking Earmuffs When you need to block the noise, Howard Leight gives you the tools to do the job right. From the maximum attenuation available in an earmuff to economical designs we set the standard for noise blocking and hearing protection.. -UNSPC CODE: 46181902. Product Type: -Ear Muffs. Type I: -Ear Muffs. Headband: -Yes. Noise Reduction Rating NNR: -26 db. Color: -Green. Quantity: -Single.