Reliable Material: These humidifier filters are made of premium polyester, which is durable, odorless, highly absorbent, and features a large absorption area. They are resistant to breaking or deformation, ensuring reliable performance. Product Functions: Our mineral absorbent pads help reduce mineral buildup, filter impurities in water, and improve humidifier performance and longevity. Compatibility: Compatible with Levoit humidifiers models LV600S, LV600HH, and OasisMist 450S only. Please verify your device model before purchasing. This product is not affiliated with, sponsored by, or endorsed by Levoit or any other brand. Specifications: Color: White Material: Polyester Dimensions: 5.3 x 5.3 cm (2.09 x 2.09 inches) Package Includes: 20 filter elements Note: The actual product color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.