3M™ E-A-R™ Classic™ uncorded earplugs set the standard in hearing protection as the world’s first foam earplugs. Constructed from slow-recovery foam, these disposable earplugs are uniquely moisture-resistant. Still one of the most widely used foam earplugs today, the 3M™ E-A-R™ Classic™ earplug is an economical, reliable choice in hearing protection and conservation. Slow recovery, low-pressure foam conforms to the shape of the ear canal to help create a comfortable, snug noise barrier.