? Compatibility: Compatible With Dyson Dc25 Animal Ball Vacuum Cleaners | | ? Air Filtration: The Pre-Filters And Hepa Post-Filters Are Made Of High Quality And Environmentally Friendly Porous Fabric Well-Tested By The Manufacturer And Provide Sufficient Support, Higher Efficiency, And The Best Quality For Excellent Performance And Longer Service Life. | | ? Washable Reusable: We Recommend You To Replace The Filter Every 2-3 Months, But Usually It Depends Upon The Frequency Of Your Usage. Additionally, The Vacuum Filters Can Be Washed In Warm Water By Hand And Let It Complete Dry Before Using | | ? What In Box: 2X Pre Motor Filter 2X Post Filter | | ?Quality Satisfaction: Your Satisfaction Is Our Greatest Wish. We Will Provide You With The Best Quality Products And Services. If You Are Not Satisfied, Please Feel Free To