The Maskproof® cloth mask has a convenient internal pocket for inserting the filter. The simple steps to follow for correct insertion, which guarantees the best performance of our product, are illustrated below.

Unfold the mask by placing the outer side on a flat surface.

Lift the left flap and insert the filter keeping the part of the word “PM2.5” at the top left.

Lift the end of the inner pocket, located below the flap, to allow the filter to slide until it is fully extended in the pocket.

The filter will be correctly inserted if the word “PM2.5” will be visible by opening the pocket.

In order to obtain the best performance, the filter must be equidistant from the two ends of the mask.

NB: a package containing two PM2.5 filters is always included in the purchase of each Maskproof® mask.