Features:<br />Material madecotton・ good quality.<br />Suitable for USB Water Bottle Caps Humidifier.<br />Can be sheared in shorter you need.<br /><br />Specifications:<br />Color: White<br />Material: Cotton<br />Length: About 9.7cm/3.8''<br />Diameter: About 7mm/0.3''<br /><br />NOTE: All the sizes are measured manually・ and mistakes may exist・ please understanding that・ thank you!<br /><br />Package Includes:<br />2x Replacement Filters