【Package Contents】You will get 30 pieces white humidifier filter wicks, the cotton filter sticks are about 10cm/4 inch in length, and 0.8cm/0.3 inch in diameter, enough for your daily need. 【Quality Material】The humidifier wicks is made of high quality fiber cotton, good absorption, suitable for kinds of perfume, and other water solvents, insoluble in water and not easy to be sticky. 【Feature】The humidifier filter stick is characterized by good elasticity, uniform pore distribution, it is capable of filtering sediment from water, increasing air humidity, help your humidifier work better. 【Easy to Use】Humidifier wicks are simple to remove and install, first, take out the old cotton filter rod, then completely soak the new humidifier rod and fix it in the humidifier. 【Wide Application】Humidifier filter stick is used as a water filtering medium for cool mist humidifiers, mini humidifiers, etc. Is the practical tools for office,room and travel use, extending the life of humidifiers.