3M E-A-R Push-Ins 318-1000 earplugs, Uncorded - NRR 28 NRR33 and the 36136KDP adds a

and the 36136KDP adds a DuPont Kevlar liner plus a padded double palm

The listing states it meets OSHA 29 CFR 1910

if you need a documented impact level on file

It meets the Class 3 minimums of 1

Kidde makes a separate rechargeable 2A10BC model if you want a reusable unit

3M E-A-R Push-Ins 318-1000 earplugs, Uncorded - NRR 28 NRR33 and the 36136KDP adds aEDITORIAL REVIEW: 4. 5 5 WC Safety Review 3M E A R Push Ins 318 1000 Cordless Earplugs NRR 28 The 3M E A R Push Ins 318 1000 earplugs covered on this page is reviewed here against its published specification and the standard that governs its category, not against a marketing claim. It is also listed as push to fit foam earplugs, uncorded foam earplugs. Editorial assessment by Steven Eaton, WC Safety editor, based on published 3M specifications and