Using this face mask is easy. Just put it on by looping the earloops around your ears. You can insert an extra filter through the opening between the two layers for added protection. Make sure to wash the mask regularly to keep it clean. When washing, use mild detergent and warm water. Let it air dry completely before using it again. Do not use bleach or harsh chemicals as they may damage the fabric. Also, check the mask for any signs of wear and tear. If it's damaged, it's time to replace it. This one-size-fits-most mask should fit comfortably on most adults, but if it feels too tight or loose, you may need to adjust it gently.