The KYNG Mask and Filter can be used in a variety of ways. From home projects in adding a layer of protection to your face or for your favorite HALLOWEEN Mask, the KYNG mask and filter will serve its purpose. So have fun using the mask for your next paint ball game, for preparedness, or any other use you may find. The FILTER USED IN VARIETY OF WAYS -Charcoal is carbon & Activated charcoal is charcoal that has been treated with oxygen to open up millions of tiny pores between the carbon atoms. The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300-2,000 square meters per gram. Charcoals are widely used to adsorb odorous or colored substances from gases or liquids MANUFACTURED: Made in 2021 and good through at least 2030 Sealed