The cylindrical design fits comfortably, offering an effective acoustic seal with 3M™ proprietary slow recovery foam that ensures a good custom fit inside most ear canals
Textured surface helps them stay in place with jaw movement over long periods
Compatible with 3M™ E-A-R™ One Touch™ Pro Earplug Dispenser
Compatible with the 3M™ E-A-Rfit™ Dual-Ear Validation System for an accurate quantitative assessment of noise reduction and individual hearing protection
Moisture-resistant
23dB (Class 4) attenuation and tested and approved against AS/NZS 1270:2002
Hydrophobic construction (repels water)

3M™ E-A-R™ Classic™ earplugs packaged in convenient Refill Bottles to fit your One Touch™ dispenser 391-1000. The world`s first foam earplugs and still the most widely used cylindrical earplug today. Packaged in convenient Refill Bottles to fit your One Touch™ dispenser.

The 3M™ E-A-R™ Classic™ earplug is an economical, reliable choice for 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. These earplugs are moisture-resistant They are also test compatible with 3M™ E-A-Rfit™ Validation System.