Serenity Choice Comfort hearing protection is developed to reduce sounds of conversations, telephone ringing as well as noise from airplanes, trains, etc.  The packages come with small, medium and large size sleeves to fit most ears. These Serenity Choice Comfort ear plugs have an SNR value of 16 dB and an NRR rating of 9 dB. These block noticeably less sound than a standard foam ear plug, helping to take the edge off of noisy and annoying sound, but still allowing you to carry on conversations and be aware of your surroundings.