Pssopp Aquarium Filter Sock, 4 Inch Ring by 15.75 Long Fish Tank Sock Reusable Bags with Holder

【Quality Guarantee】 Guarantee refund, if you have any dissatisfaction on the quality of goods, please contact us, we are willing to send you a new goods or a full refund.Package Included: 1* Filter Sock 【High Quality】 Our filter sock is made from premium thick cotton material, compared to the traditional filter, this bag has stronger dirt blocking ability, longer life and more clear filter effect. 【Reusable & Solid construction and heavy duty stitching make these socks strong and durable, so they can be cleaned and reused numerous times. 【Application】 Ideal for filtering water, effective to remove solids and suspended particles, producing crystal clear aquarium water, improving water quality in fish tank. 【Easy Installation】 A 4 inch diameter plastic ring makes this socks easy to be fixed in the water inlet or outlet and fit most sump holders.Diameter: 10.2cm / 4.02in， Length: 40cm / 15.75in