3M™ E-A-R™ Classic™ Uncorded, Pillow Bag 310-1001, Uncorded - 23dB (Class 4) (Box of 200 Pairs)Classic earplugs were the industrys first foam earplugs, virtually revolutionising hearing protection. Today, the revolution continues. It meets more wearer and environmental needs with its proprietary foams, preferred cylindrical shape, and proven in ear comfort. The 3M E A R Classic Uncorded Earplugs were the worlds first foam earplugs and are still one of the most widely used earplugs today. Slow recovery, low pressure foam fits snugly to create a