Colour:Coarse hole 15mmx20mm Quantity:1 Welcome to my store , Hope you have a pleasant shopping trip! Features: 1.Polyester mesh, tear-resistant, corrosion-resistant, long service life, durable2.Coarse mesh is suitable for larger particles; fine mesh is suitable for fine-grained smaller media3.Its mesh grid keeps the fish inside very ventilated, making it easy for you to fill and empty the bag without the fish escaping easilySpecificationsMaterial: polyester meshSize: S: 20cmx15cm/7.8"x5.9",M:30cmx20cm/11.8"x7.8"; L:40cmx30cm/15.7"x11 .8";Package List:10PCS x Aquarium Filter BagsNotes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. Polyester Mesh, Tear-resistant, Corrosion-resistant, Long Service Life, Durable Suit Freshwater, Saltwater Aquarium Fish Tank, Swimming Pool, Pond, Water Tank Filter Use to Purify Water, Keep Water Clean There Is A Plastic Zipper At the Mouth of the Bag, Which Is Not Easy to Rust, Easy to Clean and Maintain, and Can Be Reused When Using, Put the Filter Material Into the Mesh Bag and Put It Into the Filter Tank, and Replace It Regularly. It Is Suitable For Activated Carbon, Biosphere, Gravel, Broken Coral/peat Fiber, Volcanic Rock, Coral Sand, Ceramic Ring and Other Media Filter Materials. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. See more product details Polyester Mesh, Tear-resistant, Corrosion-resistant, Long Service Life, Durable Suit Freshwater, Saltwater Aquarium Fish Tank, Swimming Pool, Pond, Water Tank Filter Use to Purify Water, Keep Water Clean There Is A Plastic Zipper At the Mouth of the Bag, Which Is Not Easy to Rust, Easy to Clean and Maintain, and Can Be Reused When Using, Put the Filter Material Into the Mesh Bag and Put It Into the Filter Tank, and Replace It Regularly. It Is Suitable For Activated Carbon, Biosphere, Gravel, Broken Coral/peat Fiber, Volcanic Rock, Coral Sand, Ceramic Ring and Other Media Filter Materials. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.