Sold as 100/Box. Superior protection and exceptional all-day wearing comfort. Aural canal-inspired shape. Smooth, non-irritating rubberized foam skin. Patented "no-roll" design and built-in insertion stem. Reusable plugs provide superior protection and exceptional all-day wearing comfort. Aural canal-inspired shape ensures consistent attenuation and a secure low-pressure fit. Smooth, non-irritating rubberized foam skin is easy to clean with soap and water. Patented "no-roll" design and built-in stem enable easy insertion and removal. Corded/Cordless: Cordless; Shape: Bell; Material(s): Molded Rubberized Foam; Noise Reduction Rate (NRR): 26 dB.