Specifications:- Material: PVC-Color: Black-Thickness: 0.12mmPackage Included:1x waterproof membraneCharacteristics:- Beneath the beautiful foliage and active aquatic life of your pond lies the product that keeps it functioning effectively, the fish pond liner. These products are the true foundation of your pond, so you must purchase those made from the best pond liner material available.-By installing a durable fish pond liner that will withstand a variety of weather and water conditions, you can avoid the hassle of regularly replacing this integral part of your pond. Purchasing fish pond supplies and products made with the best pond liner material available to ensure that you are getting high-quality liners that are going to last.-Waterproof membranes are also an excellent choice because they are durable and strong, yet lightweight and easy to manoeuvre. They are safe for fish and durable.A notice:1. Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid.2. The colors may have different as the difference display, please understand.