The new IF masks are equipped with an integrated filter so you don't have to worry about replacing them. The masks have adjustable straps. These masks are neither a medical device nor personal protective equipment (PPE). Despite the use of a mask, existing safety precautions should still be observed. These include staying away, staying at home in case of illness, working from home (if possible), correct behaviour when coughing and sneezing, washing your hands regularly and not touching your face, nose, eyes and mouth. Wash the mask by hand or in the washing machine. When washing in the washing machine, use a gentle wash cycle at 60°C and natural detergent. Allow the mask to air dry. The mask can be washed up to 25 times without affecting the filter perforance.