The sponges are made of environmentally friendly material, it will not pollute the water as well as the environment,and can keep your pool or spa sparkling clean and clear day after day.<br> Changing your paper filter cartridge is part of your routine maintenance for your pool and regular replacement of the cartridge can prove costly. These washable and re-usable foam filters will reduce your costs.<br> Initial cost of this cartridge is slightly more than a paper cartridge yet will outlast a cartridge by a long way.<br> This Foam filter will outlast your paper cartridges and can be washed and re-used several times over.<br> Advises changing a paper cartridge each week, whereas these foams can simply be washed and put back. You should see a foam filter last around 2 months.<br> Model Number: for Intex Type A<br> Type: Swimming pool foam filter sponge<br> colour: blue<br> Material: sponge<br> Size: 20x10cm<br> Package Contents:<br> 10 x Pool Foam Filters<br> Only the above package content, other products are not included.<br> 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!