[Filter Slots]Please keep these reusable filter frames after using. Assemble provided foam filter and ultra fine filter into reusable filter frames for next use. [save money]Reusable filter frame can help you save money, replace every 2 weeks, ONE YEAR SUPPLY! It can also reduce plastic pollution. [Protect Your Machine]The filters keep dust and dirt away from your machine, which can protect and make your device with you for many years. Colour:White+blue Material:Plastic+Cotton Package Contents: 6 * Reusable Filter Slot 6 * Disposable Ultra-Fine Filters 20 * foam filters 20 * ultra fine filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.