The Sonis® 1 helmet mounted ear defenders at level 26 SNR. Optimum positioning of the guard and optimal comfort and pressure distribution. Easy maintenance of PET and foam filled sealing pads and sealing rings. Sonis® cups can be coloured to meet a corporate identity. They can also be printed with a company logo for improved brand recognition and to prevent theft. MOQ’s apply. The universal slots of JSP helmets allow for the easy fitting of the Sonis® ear defenders, along with the JSP Surefit™ visor system for maximum protection.