Pluggerz Road are great for motor cyclists, Go Kart riders, race drivers and motorsport enthusiasts. The constant sounds from the revving engine and wind noise can cause permanent hearing damage. Pluggerz Road is designed to protect you against noise damage. The unique filter attenuates the harmful noise to safe levels, while still being able to hear traffic signals and warning devices. The Pluggerz Road earplug is a perfect fit and can be worn comfortably under a helmet.