PERFECT COMPATIBLE - Perfectly compatible with Dyson V10, V11, SV14, V15. CAN WASHABLE AND REUSABLE - We recommend washing the filter once a month and changing the filter every 3 months. To keep the inside of the vacuum cleaner clean and dust-free. SAME QUALITY AS THE ORIGINAL FILTER - The sturdy material does not affect the operation of the vacuum cleaner，So you don't have to worry about damaging the machine.