This 3PK of Philter Labs Pocket Air Filter Refills is designed to keep your air clean and fresh. Made from biodegradable material, each refill offers up to 150 exhales, providing long-lasting filtration. These refills are the perfect replacement filters for the Pocket Personal Air Filter, ensuring that you always have clean air wherever you go.

• 3 piece pack
• Biodegradable material
• Up to 150 exhales per filter
• Replacement filter for the Pocket Personal Air Filter