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 FILTRATION - The foam filter helps capture larger particles, while the ultra-fine filter traps smaller particles. Used together, they help provide cleaner air. FOR A HEALTHIER HOME - This kit is designed to help provide you and your family with cleaner air, supporting respiratory health. REPLACEMENT GUIDELINES - Reusable filter slots should be replaced every 3 to 6 months. Disposable ultra-fine filters should be replaced approximately every 2 weeks. Specifications: Applicable models: For DS500 / 700, etc Color: Blue + White Material: ABS + Cotton Size: 5.7 x 2.5 cm Package Contents: 6 x Reusable Filter Slots 6 x Disposable Ultra-Fine Filters Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.