Description: [Sufficient Quantity]: You will get 40pcs humidifier filter sticks, fit for most portable personal USB mini humidifiers, please make sure your length and diameter before purchase. [Good Water Absorption]: The humidifier filter stick can uniform pore distribution, strong water absorption, support various types of essential oils, perfume , liquid, and others. [Durable Material]: The humidifier stick is made of fiber material, insoluble in water and not easy to sticks, supports most kinds of solvents, help your humidifier work better. [Replacement]: Refill replacments swab for mini diffusers humidifiers. [Easy to Use]: Mini humidifier filters sticks are simple to remove and install, allowing you to finish installation in few seconds, please soak a filter stick to wet completely before inserting to the humidifier. Specification: Material: Fiber Cotton Size Chart:7mmx10cm/0.28inchx3.94inch Package Includes: 40 Filter Swabs(5 Pack) Note: Please allow slightly errors due to manual measurement and different monitors. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin