ADVANTAGES OF REUSABLE FILTER SLOTS - Reusable and easy to replace. They make filters for your machine more cost-effective and can reduce plastic waste, helping to protect the environment. FOAM POLLEN & ULTRA FINE - The foam filter blocks large particulate matter. The ultra fine filter captures smaller particles. Use them together for cleaner air. CLEAN AIR FOR A HEALTHIER LIFE - This kit is designed to help provide you and your family with cleaner air, supporting lung health. Color: Blue Material: Filter sponge Package Contents: 6 x Ultra Fine Filters 2 x Pollen Filters Only the above package content is included; other products are not included. Note: Light shooting and different displays may cause slight color variations between the item and the image. Measurement error allowed is +/- 1-3 cm.