Moldex Pura-Fit 6900 earplugs give you NRR 33 protection, the highest independently tested NRR on the market. Their extra-soft, extra-light foam and tapered design seal gently and snugly without pressure, while the outer surface is smooth, so it doesn't irritate the ear canal. They are 100% PVC-free. The corded molded earplugs are ideal for food processing and promotes longer use. 100 pairs per dispenser. 100% PVC-free Highest independently tested to ANSI S3.19-1974 with a NRR 33 Tapered for easier insertion Improved, softer foam for maximum comfort Hygienically packaged in biodegradable paper pouches (M6800 only) Non-irritating, smooth surface Longer length for easy fitting and removal 100 pairs per dispenser. Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects or other reproductive harm.