1. Utilizing ABS material, it exhibits outstanding elasticity, considerable toughness, and durability. Its performance remains stable amid variations in time and temperature.
2. The telescopic headband design enables the ends of the headband to be extended, allowing for adjustment according to different head shapes.
3. The comfortable soft pads mitigate compression. The interior of the pads is filled with silent sponge, and the exterior is edged with imitation leather, gently adhering to the ears and reducing the sense of oppression.
4. The interior is filled with high-quality sound-absorbing cotton. The dense voids of the sound-absorbing cotton can significantly attenuate the passing sound.

Notes:
1. Pre-wear inspection: Check the earmuffs for any cracks or air leaks in the outer shell and ensure the sealing gasket is intact. Replace any damaged parts immediately.
2. Proper wearing: Place the earmuffs over your ears, making sure they fully cover the earlobes and the sealing gasket fits snugly against your head. The headband should be positioned directly above your head. Adjust the earmuffs to achieve the best fit.
3. Avoid interference: When wearing, eliminate items that might affect the sealing, such as long hair and hats.
4. Cleaning and maintenance: Clean the outer surface of the earmuffs with a mild detergent and water. Do not soak or use chemical solvents. Regularly inspect the earmuffs for damage and replace the sealing gasket as needed.
5. Storage conditions: Store the earmuffs in a place with a temperature below 55°C, away from high heat or direct sunlight.
6. Continuous use: Wear the earmuffs throughout your time in a noisy environment to avoid brief exposure to high noise levels.
7. Regular replacement: It is recommended to replace the sealing gasket and foam lining at least twice a year to maintain optimal noise reduction performance.