SensGard SG-26 Lightweight Hearing Protection Band NRR 26dB (Black) Noise Reduction Rating of 26dB. Effective Ear Protection Against Harmful Noise. Minimizes Damaging Noise, While Allowing Speech to Pass Through. Patented ZEM Sound Reduction Chamber Technology. No Batteries Required. Lightweight and Comfortable Head Band. Easily Adjusts to Fit. Quickly Folds for Storage and Portability. Proudly Made in the USA.