Ear plugs for hearing protection and noise reduction; hearing protection devices, namely, ear plugs for noise reduction; hearing protection devices, namely, ear plugs, earmuffs in the nature of headsets for noise reduction to protect ears against excessive noise and injury; electronic hearing protection devices, namely, over the ear muffs, ear plugs and ear inserts for noise reduction, noise protection and suppression; Ear safety devices, namely, plugs and ear inserts for non-medical purposes...