Reliable, safe material Made from density polyethylene (HDPE) at 0.13MM thickness. Environmentally friendly and nontoxic — will not release harmful substances — protecting fish, aquatic plants and surrounding wildlife. Longlasting durability UV and tear resistant with strong weather tolerance. Resists aging from longterm sunlight and stands up to winter cold, heat, rain and other severe weather. Waterproof and impermeable to effectively block water and soil moisture. Easy to install and flexible and soft to the touch so it folds and bends to fit curved ponds and complex terrain. Supports cutting to size for tailored installations and quick onsite adjustments. Keeps water clean and lowers maintenance Creates an effective barrier against soilborne contaminants, helping maintain water quality and reduce cleaning and costs over time. Suitable for many applications Designed for: ecoponds, koi ponds, artificial streams and waterfalls, fountains and water features, water retention systems, planting boxes and landscaping renovation. Practical use scenarios Backyard koi pond: Cut the HDPE liner to size, press it into the excavated shape and build a protective stone edge. The liner's nontoxic material protects your fish and prevents leaks. Garden waterfall or stream: Flex the liner along winding channels and under rock work to create continuous water flow without seepage. Planter or retention system: Line planting boxes or temporary water retention areas to isolate soil contaminants and retain water for irrigation or decorative features. Key specifications Material: HDPE ( Density Polyethylene) Thickness: 0.13MM Features: UV resistant, tear resistant, waterproof, flexible, cuttofit A practical, professional choice for protecting water features and landscaping while keeping aquatic environments safe and lowmaintenance.