The Sonis® 3 adjustable ear defenders are designed to provide maximum hearing protection in environments with very high noise levels. With a 37dB SNR rating, they are ideal for heavy industrial applications such as construction, airports, manufacturing, and engineering.Developed with acoustic specialists, the Sonis® range delivers high attenuation while maintaining comfort during extended use. The over-moulded headband includes a built-in ventilation zone, helping to reduce heat build-up and pressure for improved wearability throughout the day.Adjustable steel arms allow the ear cups to be tilted and positioned for an even distribution of pressure, ensuring a secure, personalised fit and consistent noise reduction performance.Soft, wide ear cushions create an effective seal against the head, enhancing both comfort and protection while reducing fatigue during prolonged use. Durable materials and replaceable hygiene kits help extend product life and maintain cleanliness in regular use.Fully compliant with EN 352 standards, the Sonis® 3 provides dependable, high-level hearing protection in the most demanding environments.