Fish Pond Liner, Thickness 0.12mm (5 mil) Durable and reliable: 0.12 mm (5 mil) thickness with tear and puncture resistance. Designed to perform on uneven pond bases and resistant to plant roots, helping keep your pond leak. material: Made from heavyduty HDPE for waterproofing and leak resistance compared with standard options. Resists tears and punctures from sharp rocks to support longlasting performance and steady water levels. Easy to use and maintain: Dig and fill a hole, then lay the liner on a flat bottom. The smooth surface simplifies cleaning and helps prevent contaminants. For better fit, heat the liner in the sun for 10–15 minutes to shape around various pond sizes and contours. Easy to cut and adapt: Durable, lightweight, and flexible enough to be cut to size. Ideal for installing in ponds with uneven surfaces or irregular shapes, and suitable for creating water features in gardens or yards while protecting aquatic life and plants. Use scenarios: Backyard garden pond with an uneven base and nearby rocks, where a flexible liner prevents leaks. Landscape water feature or decorative pond with an irregular shape requiring easy shaping and fitting. Replacement liner for a garden pond that has plant roots or shifting soil, offering reliable protection and longlasting performance.