BEARD TARP™ Hydroknit Filter
The Beard Tarp™ has been manufactured with 3 layers of cotton protection. While cotton has been shown to stop up a significant amount of particles, we've paired that with a Hydroknit towel filter (nearly identical to the fabric used in Blue Shop towels). This fabric has been studied to show that it can dramatically reduce the chance of particles passing through the mask. Paired with three layers of cotton, you can trust that you and your beard are protected when wearing the Beard Tarp™.
It is highly recommended that you discard and change your filter after each use.