• 5-Layer filter insert for masks
• Perfect for protection against dust, pet dander and germs larger than 2.5microns
  
• It is recommended to replace the carbon filter every 3 - 5 days of usage, If wearing all day then it is recommended to change every 2- 3 days.
  
• 10-Pack provides one month supply for your fabric masks
• Using carbon filter increases the effectiveness of all fabric masks
• Remove filter from fabric masks before washing the mask

Please Note : Due to health and hygiene reasons this product cannot be returned