"The 3M E-A-R Classic Corded Earplugs are the world's first foam earplugs and still the most widely used cylindrical earplug today. NRR 29dB. Slow recovery foam provides comfort with low pressure. 200 pairs. Adjustable Fit No, AM/FM Radio No, Battery Required No, Case Included No, Noise Reduction Rating NRR dB 29, Pairs qty. 200, Disposable Yes, Hearing Protector Type Earplugs. Moisture-resistant Flame-resistant Yellow"