Hearing loss from exposure to loud sound affects millions of people. Noise-induced hearing loss is preventable. And it"s easy to prevent. ETY-Plugs were developed to provide low cost, one-size-fits-most high fidelity earplugs that can be used in a variety of noisy environments. The goal of the ETY-Plugs design was the same as Etymotic"s famous Musicans Earplugs: to reduce noise but preserve sound quality; in effect, to turn down the noise but not muffle voices, environmental sounds or music. These high-fidelity earplugs are effective or anyone who needs to hear accurately in noise: Attendees at concerts, clubs, other loud performance venues; Aircraft personnel; Construction workers; Industrial workers; Medical/Dental workers; workers in environments with loud music such as concert halls, nightclubs or bars; Emergency vehicle personnel; Athletes; Participants in Motor Sports; Truck Drivers. Each purchase includes high fidelity earplugs, black cord, carrying case and instructions. Easy to carry in your purse, backpack or pocket. Available in Standard Size or Large Size.