Description :<br>3M 312-1250 E-A-Rsoft Guards Plug Sleeping Anti-noise Noise Reduction Earplugs Yellow<br>Features :<br>These foam earplugs offer a soft， low-pressure solution for comfortable wear.&amp;middot; Poly bag keeps earplugs clean before use.&amp;middot; Regular size fits most earcanals.&amp;middot; Noise Reduction Rating (NRR)x 33 dB. CSA Class AL.&amp;middot; Test compatible with 3M&amp;trade; E-A-Rsoft&amp;trade; Validation System. Must see the Learn More Section - How to Use the NRR.<br>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&amp;trade;.<br>Specifications :<br>Brand Name : 3MModel Number : 312-1250sizes : MMaterial : FoamNRR : 36 dBSNR : 33dB<br> Package includes :