【Safe Material】: The thick pond liner is made of high-quality high-density polyethylene (HDPE) with a thickness of 0.2 mm. It offers excellent flexibility and ductility. It is resistant to UV rays, sunlight, temperature fluctuations, and is not easily punctured. 【Raincoat Fabric Size】: 3m x 4m, thickness 0.2mm, seamless, easy to install and fold. It can be cut to any size to fit any uneven surface. 【Pond Protection】: The pond liner is harmless to fish and plants, non-toxic and environmentally friendly. It effectively protects the plants and fish in the pond by blocking soil and water, preventing harmful substances from seeping in. 【Wide Application】: The effective use of outdoor pond liner eliminates the need for regular replacement of pond components and laborious cleaning. Pond liners are ideal for fish ponds, irrigation ponds, turtle ponds, fountains, waterfalls, and water gardens. 【Instructions for Use】: The liner provides a flat surface for your garden pond. Due to the high water