[Reusable Washable Filters]: Replacing paper filter elements is part of your swimming routine maintenance, and regular filter changes can be costly. These washable and reusable foam filters will keep your costs down. [Durable]: This foam filter lasts than a paper tube, and can be washed and reused many times. [Reusable & Washable]: It is recommended to replace the paper tube once a week, while these foams can simply be washed and put back in place. [Keep Water Clean]: It's a good stain remover for swimming pools. You should see the foam filter last for about 2 months. size: 7.5 x 10.8cm Material: sponge colour: blue Package Contents: 8 x foam 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.