Banded hearing protector features a flexible comfortable band which helps keep ear plugs in place. Includes two sets of ear plug tips: Flex 28 tips and Comfort Pod tips that do not penetrate the ear canal as far with an NRR of 19 dB. Corded/Cordless: Corded Shape: Cylindrical Material(s): Foam Noise Reduction Rate (NRR): 28 dB.Unit of Measure : Each