With a Noise Reduction Rating of 27, Howard Leight by Honeywell AirSoft Flanged Corded reusable Earplugs offer unparalleled workplace hearing protection in a multiple-use earplug. These flanged earplugs feature a unique, four-flange design that creates a better seal in the ear without that "plugged up" feeling you can get with other earplugs. This is attributable to the noise-blocking fins, which form low-pressure air pockets in your ear canal. The result is more comfortable, more dependable earplugs. The firm stem and tapered design makes for easy insertion and removal. The high-visibility red polycord helps prevent loss or misplacement. 100 pairs of reusable earplugs per pack.