Enhance the performance of your USB water bottle cap humidifier with these high-quality Filter Cotton Sticks, designed to provide optimal air purification and moisture diffusion. Crafted from premium filter cotton material, these replacement sticks effectively absorb water and promote a pure stream of water vapor, refreshing your indoor air and helping you breathe more comfortably. Key Features: · Compatible with USB Water Bottle Cap Humidifiers: Specifically designed to fit and work seamlessly with most USB humidifier diffusers, ensuring easy replacement and perfect compatibility. · Superior Filter Cotton Material: Made from high-quality, absorbent filter cotton that offers excellent water absorption and durability for enhanced humidifying efficiency. · Pure Steam Output: The effective foam filter design helps generate a clean and consistent water vapor stream, improving air freshness and comfort. · Excellent Porosity and Water Storage: Features balanced porosity distribution, strong absorbency, and stable volatility to maintain consistent moisture release without clogging. · Non Water-Soluble & Anti-Blocking: Ensures the filter does not dissolve or block, maintaining steady diffusion rates and prolonged usage. · Customizable Length: Easily sheared to your desired length for a perfect fit and optimal humidifier performance. Replacement Instructions: 1. Unscrew the water tank cap. 2. Gently pull out the filter plastic part, noting the spring at the bottom. 3. Remove the old filter and replace it with a new filter cotton stick. 4. Reinsert the filter plastic part, ensuring the spring is correctly positioned. 5. Screw back the water tank cap securely. Specifications: · Condition: 100% Brand New · Material: Filter Cotton · Color: White · Size: Approx. 7mm diameter x 130mm height (0.28 x 5.12 inches) · Package Includes: 10 x Filter Cotton Sticks These filter cotton sticks offer an easy and effective way to maintain your USB water bottle cap humidifier, ensuring consistent operation and improved air quality. Ideal for use in home, office, or travel settings, they provide reliable moisture diffusion to enhance your living environment.