Specifications: Made of premium sponge material, it is durable and practical. It is suitable for Oase BioPress, for PondoPress. The foam filtration removes debris from the pond water. Super porous foam material helps keep pond water crystal clear. Item Name: Sponge Filter Material: Sponge Features: Easy to Install, Durable, Cleaning Tools Blue Filter Size: 15.2cm x 15.2cm x 3.3cm/5.98" x 5.98" x 1.30" (Approx.) Black Filter Size: 15.2cm x 15.2cm x 9.0cm/5.98" x 5.98" x 3.54" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Blue Sponge Filter 2 x Black Sponge Filters Note: Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding. Color may vary depending on your monitor, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly