Do-All Outdoors - Sound Soldier Sport Plug NOISE REDUCTION: 24 dB noise reduction rating TWO SETTINGS: closed cap for sound reduction or open cap to block out loud sounds while still enhancing soft, quiet sounds COMFORTABLE FIT: concha ring conforms to the outside of user's ear for optimal comfort SOFT: constructed of soft polymer to avoid irritation of the ear DUAL PURPOSE: can be used as traditional ear plugs or as replacement tips for Sound Soldier Boost Series BTE plugs