Effectiveness of hearing protection at work can strongly fluctuate due to the following reasons:

• Mounting of the hearing protection
• Bad resistance of the  material
• Change of the formation of the ear during a long-term period

Constant attenuation for the Serenity products is guaranteed by:

• Perfect accuracy in shape due to the custom-made ear mould
• Unique and individual measurement of attenuation effects in the ear in the beginning and at regular periods (optional)
• Material resistant to mechanical, thermal or chemical exposure
• Filter characteristics individually adaptable to the noise level at work
• Cost-effective and fast replacement of the ear moulds due to the digital manufacturing process