The InterGP™ are helmet mounted ear defenders designed for general purpose use. International slot compatibility means the InterGP™ fits the complete range of JSP Safety Helmets , and are even compatible with the JSP Surefit™ visor system. Easy to attach and detach with spring loaded arms that give an excellent fit to the ear. The steel arms maintain a constant and even pressure, whether hot or cold conditions, no matter how long user wears the cups for. When not in use the arms allow the cups to stand off clearly from the head. Conforms to EN 352-3. Universal Slot Compatibility - Fits the complete range of JSP Safety Helmets also compatible with the JSP Surefit™ Visor system for maximum protection. Adjustable Steel Arms - The wearer can tilt and adjust the position of the cup for optimum comfort and fit, also offering even distribution of pressure. Light, Low Profile Cups - The InterGP™ feature a low profile and lightweight design. Comfort - Thick, wide and soft cushions provide comfort for prolonged use. SNR = 25DB - For general purpose hearing protection.