Feature Highlights: 1. Neat & Full Appearance – The sponge sticks are uniformly shaped, plump, and bright white in color. 2. Excellent Elasticity & Seal – Offers good resilience and effectively prevents water leakage once the bag is sealed. 3. Even Porosity & Strong Absorption – Pores are evenly distributed for powerful water absorption, large storage capacity, and stable evaporation. 4. Water-Resistant & Non-Sticky – Does not dissolve in water, remains non-sticky, and maintains consistent evaporation for water-based solutions. 5. Wide Compatibility – Works with various perfumes, liquid medicines, and other water-based solvents to filter and store water. Product Details: These replacement cotton sticks are designed for portable personal USB-powered humidifiers. Made from high-quality fiber cotton, they provide reliable water absorption and steady evaporation. Perfect for maintaining your humidifier’s performance—simply replace the old sticks with these to keep your device running smoothly. Specifications: - Product Name: Replacement Cotton Sticks for Portable Personal USB-Powered Humidifiers - Type: Humidifier Sponge Sticks - Size: 75 x 7 mm - Material: Fiber Cotton - Color: White - Package Contents: 40 × Humidifier Sponge Sticks Note: The image may slightly differ from the actual product due to lighting and screen settings. Please allow a measurement tolerance of +/- 1–3 cm.