I had been warned that some drivers could experience a balance disorder using these plugs ... I have not found it. I mainly use these plugs for long motorway journeys and they play their roles perfectly. Of course, no miracle either: drive at top speed remains noisy, but the level is much more bearable. The "filter" system properly plays its role by eliminating a large part of the big noises but not preventing me from hearing the GPS via my Cardo Scala. The tips are easily washed in hot water (not even need soap) and the small pouch stows carefree in a vacuum bag (yes, my GTS is equipped with a vacuum bag) or in the pocket of the jacket . Nevertheless, I regret that the cover is not better studied (smaller, or better designed to keep the unused bits) In short, a star less because the product is not perfect, but four stars anyway because (especially on long trips) it still brings a net comfort (while preserving your little ears)
