Cleaning with warm soapy water, do not use organic solvents or alcohol for cleaning.
2. When not in use, it is recommended to store the ear muff in a clean and dry poly-bag. For models equipped with PVC leather headband, it is not allowed to store the products in the temperature higher than 45°C. The environmental friendly material used for the PVC leather will have qualitative change under excessive high temperature either in transportation or storage over time.