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 bright green for easy compliance checks and 100% PVC-free. The corded molded earplugs are ideal for food processing and promote longer use. Uncorded earplugs are available 200 pairs per box and corded earplugs are available 100 pairs per box. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.