Reliable Material: These humidifier filters are made of premium polyester, which is reliable and durable, odor-free, with good water absorbency and a large absorption area. They are not easy to break or deform, allowing you to use them with confidence. Product Functions: Our mineral absorbent pads help prevent mineral buildup, purify minerals and impurities from water, and effectively filter dandruff, minerals, dirt, and odors. This improves humidifier performance and extends its service life. Compatibility: Our products are compatible with Levoit Humidifiers LV600S, LV600HH, and OasisMist 450S only. Please confirm the brand and model before purchasing. Please note that our product is not sponsored, endorsed by, or affiliated with Levoit or any other brand it fits. Specifications: Color: White Material: Polyester Product Size: 5.3 x 5.3 cm / 2.09 x 2.09 inch Package Contents: 20 x Filter Element Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.