Compatibility - Replacement filters compatible with Dyson DC28 DC33 DC37 DC39 DC53 Washable and reusable - The filters for dyson DC28 DC33 DC37 DC39 DC53 can be washed and used repeatedly, it is more economical. Effective function - dyson vacuum cleaner filter effectively absorbs fine dust, pollen, pet dander, mold, bacteria, smoke, bad odor, chemical gas and so on, let you breathe more comfortably. Package includes - 2 x filters for dyson ball DC28 DC33 DC37 DC39 DC53 Note: The data are all measured manually, please allow 1-3cm error due to different light and display, there may be some differences color, please refer to the actual item received.