Earplugs are often used in dirty work environments. This means that particles can easily stick to the surface of materials and cause minor injuries to the wearer's ears. The smooth and dirt-repellent surfaces of the uvex whisper, whisper+ and whisper supreme earplugs can easily be cleaned with soap and water. This increases wearer comfort and safety for the user. The detec version of the uvex whisper+ is easily detectable, both visually and by machines, thanks to its striking blue colour and metal ball.