e-a-r provides the most trusted hearing protectors in the world, and is a leading designer, manufacturer and innovative marketer of different styles of hearing protectors. included are foam earplugs, semi-insert devices, earmuffs, and specialized acoustic response protectors with include noise-activated hearing protectors like the ultra 9000 earmuff, and the ultratech earplugs. e-a-r leads the advancement of hearing protection with innovative solutions to the realistic problems faced by hearing conservationists. starting in 1973 with the first foam earplug, the e-a-r classic, e-a-r has revolutionized hearing protection. recent developments include superfit with a patented fitting ring which allows for an easy visual fit check of proper fit, and the e-a-rflex semi-aural line with innovative hinged band allowing for multiple wearing positions. e-a-r also markets the er-3 insert audiometric earphones with provide extraordinary noise exclusion and other unique features.