text: Filter for OTOjOY Custom Earplug
  Replacement filter for OTOjOY Concert Custom and other customer earplugs. The changeable filters lower the sound levels equally across all frequencies and provide excellent sounds experience.
  The 9 dB filter is best when you only want to cut back just a little bit of ambient noise.
  The 15 dB filter is a good balance between hearing protection and still feeling very “live”. This filter is most commonly used by performing musicians and concert goers.
  The 25 dB filter is for extremely loud environments.