ADVANTAGES OF REUSABLE FILTER SLOTS - Reusable and easy to replace. They make filters for your machine more cost-effective and can reduce plastic waste to be more environmentally friendly. FOAM POLLEN & ULTRA FINE - The foam version helps block large particulate matter. The ultra-fine version helps capture fine particles. Use them together to help provide cleaner air. CLEAN AIR FOR A HEALTHIER ENVIRONMENT - This kit is designed to help provide cleaner air for you and your family, supporting respiratory 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: Lighting and display differences may cause the color of the item in the image to vary slightly from the actual product. Measurement may vary by up to +/- 1-3 cm.