1、Sponge Lining: The padded interior of the soundproof earmuffs is filled with a mute sponge, which has an excellent noise reduction effect and is suitable for all kinds of noisy environments.  2、360 Degree Rotation:The double layer headband, 360 degree all round rotation, allows you to position the earmuff for better wearing angle.  3、Telescopic Design: Noise reduction ear muff is telescopic, six gears free adjustment, can match to meet the needs of all ages head circumference.  4、Comfortable Wear: U shaped headband with soft imitation leather, soft and close to the ear, uniform force, reduce the sense of pressure, long wear will not hurt.  5、Material: The earmuffs are made of light ABS material, and the automatic rebound earmuffs bracket is made of stainless steel and resin synthetic headband toothed, which is formed in one body and is more beautiful.