3M™ E-A-R™ Push-Ins™ 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. These Push-to-Fit, corded foam uncorded earplugs are easy to use again and again, reducing waste. Proprietary no roll down - poly bag keeps earplugs clean before use - blue stem makes fitting and removal cleaner and easier. Noise reduction rating (NRR)- 28 dB CSA class AL. Test compatible with 3M™ E-A-Rfit™ 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™.