ER20XS earplugs are smaller, more discreet and have identical frequency response characteristics and performance of ETY•Plugs® which have protected the ears of hundreds of thousands of musicians worldwide since their introduction. ER20XS earplugs feature a low-profile, stem-less design that sits snugly in the outer ear without protruding. This makes it especially comfortable to wear under hats, helmets and other headgear. ER20XS earplugs come with a small, flexible pull tab that allows for easy removal, an easy-to-install neck cord and a carrying case. 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 Musicians 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 for 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, cord, carrying case, and instructions. Easy to carry in your purse, backpack or pocket. Standard size fits most. Large size for larger ear canals.