... piece retention.Attenuation filter in 23db for music events, disco, concerts, clubbing, etc, filter in 27dB for shooting and other high noisy condition ... ;Low-profile design;Large size, middle size and small size for adult and children;PU foam earplugs in conical shape, cylindrical ... -2CordNylon, PVC Bullet shape protective Industrial Ear Plugs and disco, music Ear Plug GJ-02