3M(TM) E-A-R(TM) Push-Ins(TM) uncorded foam earplugs provide all-day hearing comfort, convenience and protection. Constructed of 3M(TM) E-A-Rform(TM) foam, these earplugs feature a no roll-down design and a blue stem for a quick and easy fit. These push-to-fit, foam earplugs are easy to use again and again, reducing waste. (bul) Poly bag keeps earplugs clean and accessible for re-use. (bul) Blue stem makes insertion and removal cleaner and easier. (bul) Noise Reduction Rating (NRR)* 28 dB. CSA Class AL. (bul) Test compatible with 3M(TM) E-A-Rfit(TM) Validation System. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation(TM).