OEM Sperian Howard Leight AirSoft Polycord Earplugs, packaged with 100 pairs per box. These earplugs feature a 4-flange design that delivers optimal protection and increased comfort. Internal fins create a noise-blocking barrier for dependable attenuation, while the firm stem and tapered shape facilitate easy insertion and removal. With a Noise Reduction Rating (NRR) of 27, they offer a high level of protection for various environments.