10 Packs Mini Portable Personal USB Humidifier Replacement Sponges Refill Stick
- Porosity distribution; absorbent particularly strong, water storage capacity, volatile stability.
- Effective foam filter will enable a pure stream of water steam to freshen the air, which will ensure your ability to breathe more comfortably.
- Compatible for USB water bottle caps humidifier.
- Not water-soluble, non-stick blocking, to maintain the consistency of volatile agent speed.
- Made of filter cotton material , good absorbed and quarity.
