Sufficient quantity: you will get 40 white cotton humidifier filter wicks, each is approx. 10 cm/ 4 inch in length and 0.3 inch in diameter, enough quantity to meet most of your needs; Practical tools for office, bedroom and travel Good water absorption: The humidifier filter stick is characterized by good elasticity, even pore distribution, strong water absorption. water, good storage capacity and volatilization stability Quality material: the humidifier stick is made of filter cotton, insoluble in water and not easy to stick, supports the most kinds of perfumes, liquids and other water-based solvents, helps your humidifier work better Extend the life of the humidifier: come and replace the filter with humidifier cotton sticks, when the humidifier produces less steam or even stops working and even gets hotter, extend the life of the humidifier (usually 1-2 weeks to change the filter) Easy to use: the humidifier wicks are simple to remove and install, allow you to complete the installation in seconds, please soak a filter stick to make it completely wet before inserting it into the humidifier; It is recommended to use tap water and do not drip essential oils to soak (if necessary, adding a small amount of essential oil is acceptable)