"The #1 reusable earplug in the world Triple flange design allows for a comfortable, snug fit. Cord reduces the chance of earplugs falling into the work area. NRR 21dB. U.S.A. Noise Reduction Rating NRR dB 21, AM/FM Radio No, Pairs qty. 1, Battery Required No, Disposable No, Case Included Yes, Adjustable Fit One size fits all, Hearing Protector Type Earplugs."
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