The cotton rod has a regular, full appearance. Good elasticity, not easy to leak after sealing. Pores are evenly distributed; water absorption is strong, water storage capacity is large, and volatility is stable. Insoluble in water, non-sticky, maintains consistent evaporation rate of the water agent. Product name: Replacement Cotton Swabs for Portable Humidifiers. Type: Humidifier Sponge Stick Color: White Material: Fiber Cotton Size: Approximately 73 x 7mm Package Contents: 100 x Humidifier Filter Sticks Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm.