Right Size: Each humidifier wick measures approx. 8mm / 0.31" in diameter and 200mm / 7.87" in length to meet your daily needs, easily cut to the right size for your humidifier at your convenience Replacement of the filter element: after 3-4 months of use, the filter element of the humidifier should be replaced according to the conditions of use and water quality, and the filter element should be replaced reasonably and regularly to make the spray clearer and bring you better. filtering effect. How to use: Just cut the humidifier stick to the right size and put it directly into the humidifier. Material: Made of humidifier material high quality, our humidifier filter element has good water absorption, you can soak in water without worrying about deformation and pilling, letting you enjoy a good condition and bring you a good mood.