These durable, reusable earplugs with cloth cord are easy to use again and again, reducing waste. Push to fit products provide in ear comfort and convenience, with the hearing protection you expect from 3M. Poly bag keeps earplugs clean and accessible for re use. Push to fit style for easy and hygienic fit. Single size fits comfortably in most earcanals. Proprietary, premolded, triple flange earplug design inserts easily. No rolling or sizing needed to get a comfortable, protective fit. Noise Reduction Rating (NRR)*: 25 dB. CSA Class AL. *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™.