Wash in hot water with a regular detergent before its first use and after each use.
Do not wear the same mask twice without washing. Handle mask by the elastics only. Change mask every 2 hours. Wash hands before and after using and changing the mask. This mask does not have a slot to insert a filter. For hygiene reason, masks are final sales (no exchange, no return, no refund).
Even if the use of reusable masks contributes to the collective effort against the spread of viruses, it does not constitute medical equipment and needs to be regarded as an additional step in social distancing gestures, respiratory etiquette and regular hand washing with soap.