The E-A-R Push-Ins 318-1000 push-to-fit, corded foam uncorded earplugs are easy to use again and again, reducing waste. These proprietary no roll-down earplugs provide all-day hearing comfort, convenience and protection. Constructed of 3M E-A-Rform foam, these earplugs feature a no roll-down design and a blue stem for a quick and easy fit. Noise Reduction Rating (NRR)*: 28 dB. CSA Class AL.