Description: The filter cotton sticks is compatible for all humidifier diffuser. You can sheare in shorter you need. Effective foam filter will enable a pure stream of water steam to freshen the air, which will ensure your ability to breathe more comfortably. Directions for replacement: 1) Unscrew the water tank cap 2) Pull out the filter plastic part(notice the sprint on the bottom) 3) Pull out the filter and replace the new filter 4) Pull in the filter plastic part(notice the sprint on the bottom) 5) Screw the water tank cap Specification: Condition: 100% Brand New Material: Filter cottonColor: WhiteSize: (Dia.) x (H) 7 x 130mm / 0.28 x 5.12 in (appr.) Packaged included:10 x Filter Cotton Sticks Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.

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Compatible for: 10 pcs air diffuser replacement sticks for USB water bottle caps humidifier.
Absorbent Strong: Humidifier filter replacements made of filter cotton material, good absorbed and water storage capacity.
1-2 Months Replace The Filter : When you find the humidifier produce less steam or even stop work, try to replace the filter. Avoid the increase of water impurities to block the cotton swab and affect the spray quality.
Volatile Stability: Cotton fiber stick refills not water-soluble, non-stick blocking, to maintain the consistency of volatile agent speed.
Suggestion of Portable Moist Air: For better performance of humidifier cotton filter sticks, we recommend users to soak the filter rod before inserting the humidifier and turning it on.