Safe Material: The thick pond liner is made of high-quality HDPE, with a thickness of 0.2 mm. It offers excellent flexibility and stretchability. It is resistant to UV rays, sunlight, and temperature fluctuations, and is difficult to puncture. Lid Size: 3 m x 4 m, 0.2 mm thick, seamless, easy to install and fold. You can cut it to any size to fit any uneven surface. Pond Protection: The pond liner is friendly to fish and plants, non-toxic, and environmentally friendly. It prevents harmful substances from leaking into the pond by blocking soil and water, effectively protecting plants and fish in the pond. Wide Application: The effective use of outdoor pond liners avoids the need to regularly replace pond components and difficult pond cleaning. The pond liner is ideal for fish ponds, irrigation tanks, turtle ponds, fountains, waterfalls, and water gardens. Directions for use: Pond liners provide a flat surface for your garden pond. Due to the high water pressure when filling, it is