➤Feature: Compatible for all USB humidifiers (You can cut it to fit with your humidifier or diffuser if necessary).
➤Quality material: the humidifier stick is made of filter material, supports most kinds of perfume, liquid and other water solvents, help your humidifier work better.
➤Good water-absorption: the filter stick is characterized by good elasticity, uniform pore distribution, strong water absorption, good storage capacity and volatilization stability.