Review on 🦈 Shark Navigator Lift-Away Vacuum Filter Kit Replacement Part - Pre-Filter Foam & Felt + Hepa Filter (XFF350 XHF350) by Elizabeth Morales

They are reusable. But because of the amount of dust they hold, you'll need a washing machine to remove it all. I put her in a bag and banged her against the wall. I ended up with about 1/2 cup of dust left in the bag, and I still had to use a strong sprayer at work to get it all out. The thicker one will take a few days to dry completely, so make sure it's completely dry before using it again.