3M 7000127215 earplugs are designed for ultimate hearing protection, with a high attenuation rating of 31.0 decibels. These corded earplugs feature a push-to-fit foam shape for easy insertion and are electrically insulated. The foam/thermoplastic material ensures a snug fit, and the regular cone shape provides comfort. The blue cord is made of vinyl. Each package contains 200 pairs of yellow and blue earplugs. These 3M earplugs are not metal detectable, moisture resistant, or reusable. They do not require roll-down and are not available with a dispenser.