3M™ E-A-R™ Classic™ uncorded earplugs set the standard in hearing protection as the world's first foam earplugs. Classic™ Small earplugs are slightly smaller in diameter for a comfortable fit in smaller earcanals.. Benefits •Reusable Pillow Pack helps keep earplugs clean when they are not being worn. •Classic™ Small™ earplugs have a reduced diameter for smaller earcanals. •Flame-resistant and moisture-resistant. •Test compatible with 3M™ E-A-Rfit™ Validation System. •Noise Reduction Rating (NRR)* 29 dB. CSA Class AL.