- Receive 10 high-quality white humidifier cartridges, designed to fit most portable USB mini humidifiers. Please verify the length and diameter for compatibility before purchase. - Enhanced Water Absorption: Our flexible filter rods feature a uniform pore distribution for superior water absorption and storage capacity. Enjoy stable evaporation for safer and more efficient use. - Premium Material: Crafted from durable filter material, these cartridges are water-insoluble and resistant to sticking. They are compatible with most perfumes, liquids, and water solvents, ensuring your humidifier operates at peak performance. - Simple Installation: Changing the filter cartridge is a breeze. Easily disassemble and install the new filter in seconds. For optimal results, soak the filter rod in tap water before inserting it into the humidifier. - Use Scenarios: Perfect for home, office, or travel, these cartridges help maintain a comfortable humidity level in your personal space. Ideal for alleviating dry air discomfort while using your humidifier during sleep or work hours. - Dimensions: Ensure a proper fit by checking the size specifications of your humidifier. These cartridges are designed for versatility and efficiency, enhancing your overall humidifying experience.