[Product Content] You Will Receive 3 Pieces Of Black Water Pump Filter Mesh Bags, The Sizes Are 31*41Cm, 45*45Cm, And 47*47Cm, Which Are Suitable For The Filtration Needs Of Aquariums, Swimming Pools And Other Scenes. [Product Material] This Product Is Made Of Pe And Plastic. It Is Durable, Has Good Filtration Effect And Long-Term Reliability. It Is An Ideal Choice For Water Pumps And Pond Filtration. [Multi-Size Design] This Product Contains Filter Mesh Bags Of Various Sizes To Meet Your Different Filtration Needs.Whether It Is A Small Water Pump Or A Large Pond, You Can Find A Suitable Filter Bag. [Easy To Use] These Filter Mesh Bags Are Simple In Design And Easy To Use. They Only Need To Be Instal On A Water Pump Or Filter To Effectively Filter Impurities In The Water And Keep The Water Body Clean. [Widely Used] It Is Not Only Suitable For Aquariums And Swimming Pools, But Also For Household Fish Tanks, Horticultural Irrigation And Other Scenarios To Provide Effective Water Quality Filtration Solutions.