1. heavy duty pond liner made of durable HDPE material. The liner has a thickness of 0.12 mm, designed to withstand extreme weather conditions and longterm outdoor use. It is environmentally friendly and safe for fish and plants. 2. Flexible design for any pond shape. The Garden Pool Membrane can be bent, folded, and cut to fit almost any pond shape, allowing you to create the exact layout you want. 3. Easy to install. The bottom layer of the waterproof pond film provides a flat surface for the pond, helping to reduce soil accumulation. No tools are required for installation. A layer of round cobblestone sits on of the pond liners. 4. Protective and waterpurifying. This pond liner acts as a barrier to prevent harmful substances in the soil from penetrating the pond, helping to keep the water clean and support a healthy environment for wildlife and plants. It also facilitates easier pond maintenance. Use scenarios: Customshaped backyard pond or koi pond: flexible sizing and the ability to cut to shape makes it ideal for irregular or freeform layouts while protecting water quality. Garden water features and decorative ponds: suitable for features with curving edges or nonstandard dimensions, maintaining clear water for plants and animals. Outdoor wildlifefriendly ponds: the protective barrier helps keep soil contaminants out, supporting a healthy natural habitat and easier cleaning.