3M™ E-A-R™ Classic™ Earplugs set the standard in hearing protection as the world's first foam earplugs | Slow recovery, low pressure foam conforms to the shape of the ear canal for enhanced comfort and wearability | Moisture-resistant-helps maintain a consistent expansion time, even in humid environments | Noise Reduction Rating (NRR) 29 dB. CSA Class AL | Noise reduction rating (NRR) 29 dB. CSA Class AL | Reusable Pillow Pack helps keep earplugs clean when they are not being worn.
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