The 3M Peltor Optime II earmuff has been specifically designed for environments with high noise levels and effectively dampens even at extremely low frequencies. The model H520B features a neckband with green cups and an attenuation rating of SNR = 31 dB. Thanks to its slim cup design, the Optime II ensures exceptional wearing comfort. The generous space under the cups minimizes heat buildup and sweat, providing a pleasant wearing experience even during prolonged use. Additional ventilation channels in the sealing rings promote optimal heat dissipation. The soft, wide sealing rings are filled with a unique combination of liquid and foam, ensuring a particularly low pressure while maintaining optimal sealing. A consistently low clamping pressure is also achieved through the two-point suspension made of stainless steel. The band is adjustable and adapts perfectly to the shape of the head thanks to its ergonomic design.