3M E-A-R Push-Ins uncorded ear plugs combine the comfort and accessibility of reusable earplugs with the cost and advantages of a disposable earplug. The Thermoreactive foam softens with body temperature, making them the perfect disposable hearing protection. Users do not have to roll down the foam tip, E-A-R Push-Ins are ready for use right out of the pack; you just grab the insertion stem and place earplugs into ears. These 3M pushin earplugs E31802 have a NRR 28dB and are designed for excellent attenuation on the job. 100 pairs per dispenser.