1. The anti-noise earmuffs can only clean the surface, it is recommended to use neutral soapy water and warm water, do not soak in water.
2. Do not use solvents, such as alcohol and acetone, or products containing lanolin to clean noise-canceling earmuffs.
3. Do not store the product anti-noise earmuffs in an environment where the temperature exceeds 130 degrees Fahrenheit (55 degrees Celsius), such as behind the windshield of a car or in the position of a window.
4. Regularly check the earmuffs for cracked or damaged parts, especially the gasket, and replace if necessary. To ensure stable noise reduction, good hygiene and comfort.
