The sound of a single gunshot can cause permanent hearing damage. Unlike other injuries, there is no visible evidence of noise-induced hearing loss (NIHL). Howard Leight ear plugs provide a high level of attenuation, blocking dangerous gunshot sounds ? an excellent choice for hunters and shooters on a budget. They can be used as stand-alone protection or combined with Howard Leight passive earmuffs to block out extremely high levels of noise. ? Highest Noise Reduction Rating (NRR) 33, available in a single-use foam earplug ? Bell shape design delivers maximum in-ear comfort ? Smooth, soil-resistant skin helps prevent dirt build-up ? Available both corded and uncorded