3M™ E-A-R™ Classic™ Metal Detectable Disposable Earplugs, Foam, Corded, 33 NRR, 200 Pair/Box

Constructed from slow-recovery, low-pressure foam that conforms to the shape of the ear canal for comfort and wearability. Earplug foam is flame resistant and water resistant. Features a stainless steel ball bearing in the plug and metal particles in the cord. Yellow plug with blue cord. NRR: 33 dB. 200 pair/box; 10 boxes/case.

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