Wherever large machines and long production lines are used, there is noise exposure. Even if the lines are largely automated, many workers still get close to the noisy machines. Solving malfunctions, adjusting parameters and supplying raw materials are daily activities of these employees. The technical service people use noisy tools when repairing the machines or in their workshop. In addition, logistics employees are often exposed to peak noises when placing goods on the ground. All production employees therefore benefit from comfortable hearing protection where the attenuation can be adjusted to the specific work locations and which enables speech comprehension.