3M E-A-Rsoft Yellow Neon Blasts earplugs seal the ear canal with soft, slow-recovery foam for excellent noise reduction and comfort. Exciting flame graphics.These uncorded foam earplugs feature soft, slow recovery foam for comfort and outstanding noise reduction and exciting flame graphics. Soft foam earplugs are easy to roll down and insert, then expand within the ear canal for a comfortable, secure fit.- Poly bag keeps each pair of earplugs clean before use.- Regular size fits most ear canals.- Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL.- Test compatible with 3M E-A-Rfit Validation System.- Bright yellow allows quick compliance checks.- Sold as 200/Pair.Poly bag keeps each pair of earplugs clean before use. Regular size fits most ear canals. Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL. Test compatible with 3M E A Rfit Validation System.*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..