Features: 100% brand new and good quality. Air Filter Protective Cover. It can only prevent some water droplets (oil stains) from entering. The main function is to prevent more than 90% of dust from being inhaled. It can extend the service life of the modified air filter. Black appearance, stylish and beautiful, cool and unique, attracting attention. Polyester material, durable, not easy to break, long service life. There are rubber bands at both ends to tighten, more suitable for the filter, the effect is more significant. Universal fit for most cylindrical high-flow air filter. (Please Confirm the sizes of air filter before purchase). Material: Polyester Cloth. Main Color: Black. Size: L 24cm/9.45in height x 15cm/5.91in bottom dia.x 12cm/4.72 top dia.; S 15.1cm/5.94in height x 15.5cm/6.10in bottom dia. x 11.8cm/4.65in top diameter. Package List: 1 x Dust cover Note: Please allow 1-3CM differs due to manual measurement.