Earmuffs with ear cushions, filled with a unique combination of liquid and foam, which ensures optimum sealing with low pressure even when worn over a long period of time. Sealing rings have ventilation channels and are coated with soft, patented, hygienic foil. Wide space around the ears prevents excessive sweating, in order to increase comfort. They are extremely light (only 180 g) and the low profile allows better compatibility with other protective equipment. Standard attenuation, SNR is 27 dB.