This filter cotton stick is used as a water filtering medium for cool mist humidifiers, USB-powered Mini humidifiers, etc. It's recommended to replace the filter stick after using it for 1 - 2 months based on the usage and water quality. By replacing the filter stick regularly, it will bring your humidifier a better filtering effect and make the spray clearer, allowing you to enjoy a nice atmosphere in your home, office, or car and bring you a wonderful day.Specification：Color: WhiteMaterial: Fiber CottonOverall Size: 135 x 8mm/5.31 x 0.31inch(L*D)Packing List: 20 Pcs x Cotton Filter SticksAdvantage：1. The humidifier cotton stick can be freely cut, you can cut the appropriate length according to your humidifier.2.
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