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 white nylon cord drapes easily around the neck to helps prevent loss or misplacement.