The Sleep is designed to promote comfortable and uninterrupted rest. It is great for shift workers and credited with saving many relationships!
Attenuation: NRR 24-27 dB, average attenuation 37-39 dB depending on material.
Suggested Uses: Sleeping on ships, airplanes, and other loud noise environments
Attenuation: 9 dB ER-9 filter, 15 dB ER-15 filter, 25 dB ER-25 filter, solid adapter (not rated).
Suggested Uses: Concerts, Performance, Audio Engineers, DJ-ing, Music Teaching, Bartending, Subways, Dental Work, Movies, etc.