Developed over 20 years by leading experts, NoNoise MOTORSPORT Hearing Protectors are superior to traditional foam, wax or silicone earplugs. Precision-tuned, patented ceramic filters ensure maximum protection from dangerous levels of engine, wind & road noise. Unique filtration allows conversation, sirens and horns to remain clearly audible, with no muffled effect. Comfortable and suitable for all ages - ideal for bikers and other motorsport enthusiasts.