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 protect the environment. FOAM POLLEN & ULTRA FINE - The foam filter blocks large particulate matter. The ultra fine filter captures smaller particles. Using them together helps provide cleaner air. CLEAN AIR FOR A HEALTHIER LIFE - This kit is designed to help provide you and your family with cleaner air, supporting respiratory health. Color: Blue Material: Filter sponge Package Contents: 6 x Ultra Fine Filters 2 x Pollen Filters Note: Only the items listed above are included. Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.