Helmet-mounted passive hearing protectors - optimal comfort and protection in harsh environments. Our Freebird Comfort Ultra passive hearing protectors are designed to provide maximum protection against loud noise in demanding work environments. With an SNR of 36dB, they offer superior attenuation to protect your hearing in extreme environments. The ultra slim and modern design offers a perfect fit with your safety helmet without compromising on comfort. The hearing protection are fitted with soft gel cushions as standard, ensuring an excellent fit and long-lasting comfort, even during long working hours. Ideal for industrial environments where protection and comfort are as important as performance.