Neon Uncorded 33 dB Earplugs 100 PairE A R Soft Yellow Neon Uncorded Earplugs. 33 dB. SOld 100 Pair Box. These uncorded foam earplugs offer a soft, low pressure solution for comfortable wear. Poly bag keeps earplugs clean before use. Regular size fits most earcanals. Noise Reduction Rating (NRR)* 33 dB. CSA Class AL. Test compatible with 3M E A Rfit Validation System. Manufacturer: 3M Product Name: Neon Uncorded 33 dB Model: EAR312 1250 Marketing Information: These uncorded foam earplugs