"3M E-A-Rsoft Yellow Blasts are the softest, smoothest, highest NRR earplugs. Expands slowly to fit virtually any ear canal. 200 pair per box. NRR 32dB. Disposable Yes, AM/FM Radio No, Noise Reduction Rating NRR dB 32, Pairs qty. 200, Battery Required No, Case Included No, Hearing Protector Type Earplugs."