Heavy Duty Pond Liner is made from durable HDPE material. The 0.12 mm (5 mil) thickness withstands extreme weather conditions and longterm outdoor ponds. It is environmentally friendly and safe for fish and plants. Flexible and adaptable. The pond liner can bend and fold easily to fit almost any shape, and can be cut to the required pond size and shape. Easy to install. The bottom layer provides a flat surface to reduce soil buildup. No tools are needed for installation. A layer of round cobblestones sits on the of the pond liner. Protective and low maintenance. This pond liner helps prevent soil contaminants from entering the pond, supporting cleaner water and a healthy natural environment for wildlife and plants. It also makes pond cleaning easier. Use scenarios Ideal for backyard garden ponds or koi ponds with irregular shapes, providing a durable barrier and fit. Suitable for decorative water features in landscaped areas, where a flexible liner accommodates bends and unique contours. Effective for outdoor ponds in variable climates and soil conditions, helping maintain water quality and protecting aquatic life.