Specifications: Material: Cotton Size: 10×0.7cm/4×0.3 inch Color: White Quantity: 20PCS Features: 1: Humidifier replacement filter,can be sheared in shorter for your own humidifier with the same size. 2: Not included the humidifier.Please fully soak it before using it,usually 1 to 2 weeks to change the filter. 3: 20PCS of humidifier filter stick for long time use.Lightweight,easy to pack and carry,don’t take up much space. 4: It can make your work environment more comfortable,reduce stress,relieve dry skin and increase your productivity. Package included: 20PCS Humidifier SticksWide use: Humidifier filter stick is the practical tools for office,room and travel use,allowing you to enjoy a nice condition and bring you a good mood. Protect your humidifier: When you find that the humidifier produces less steam or even stops working,and the machine is getting hotter, please try to replace the filter, dont worry about the humidifiers service life (usually 1 to 2 weeks to change the filter). Easy to install: The removing and installing of humidifier wicks are very simple,please soak the filter stick until it is completely wet before inserting the humidifier. Size: Cotton filter sticks are about 10/4 inch in length,and 0.7cm/0.3 inch in diameter,package include 20pcs,enough for your daily need. Material: Humidifier stick is made of high quality cotton material,good absorption,which is insoluble in water and not easy to stick.