Reliable Material: These humidifier filter are made of premium polyester, which is reliable and durable, no smell, good water absorbency, large absorption area, not easy to break or deform, you can use it with confidence. Product Functions: Our mineral absorbent pads can prevent mineral accumulation, purify minerals and impurities in water, effectively filter, dandruff, minerals, dirt, odors, etc. improve the performance of the humidifier and extend its service life. Compatibility: Our products are compatible with Levoit Humidifiers LV600S, LV600HH, OasisMist 450S only. Please confirm the brand and model before purchasing.Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including Levoit. Specification: Color: White Material: polyester Product Size: 5.3x5.3cm or 2.09x2.09 inch Package Contents: 20 x filter element Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.