Filter sticks size8mm (diameter) x 110mm (length) cotton filter sticks. Perfect fit Fanximan 800 ml personal wireless humidifier. In addition, the diameter of 8mm is suitable for most small humidifiers, can be cut to the length to fit your other mini humidifiers. Quality MaterialMade of premium cotton. Strong water absorption and equal pore payout provide a stable filtering effect to ensure the humidifier with the best working status. Financial SavingsA pack of 16 filters can be used for 8-16 months. No financial loss. If the humidifier is always clogged, it will heat up and break easily. We recommend our customers to replace the filter after 2 months of use (depending on use and whether the water is clean). How to startSoak the cotton swab refills in water for 1 minute before use to make the cotton swab fully saturated. Be careful not to drop the spring next to the filter when replacing it. Customer ServiceOur brands provide high quality products and great customer service. If our humidifier filter sticks do not meet your expectations, you can always contact us by email to ensure your satisfaction.