You can no longer think away mouth masks from the street scene. Unfortunately, we see many opting for disposable mouth masks. That's not sustainable. That's why we at RainPharma designed two different reusable mouth masks, with a beautiful design. That way we help protect you, others and the earth. Maintenance The masks may be washed at 60°C. Since cotton can shrink a little, it is best to pull the mask a little when it comes out of the machine. You can iron the masks, but not along the printed side or on the rubber bands.