Safety Material:; Made from UV- and puncture-resistant 20 mil thick LLDPE with excellent softness and extensibility. Free of plasticizers, making it safe for long-term outdoor pond use.Easy Cutting:; Lightweight and durable, this liner is easy to bend and install. Can be cut to fit any irregular pond shape, including corners.Versatile Applications:; Ideal for backyard waterfalls, outdoor ponds, koi ponds, and other water features. Also suitable for construction, agriculture, waterproofing, surface protection, and various coverings.Safe for Fish and Plants:; Environmentally friendly rubber liner that prevents harmful soil substances from contaminating water, promoting a healthy habitat for fish and plants.Maintenance Tips:; Clean the pond thoroughly, remove sharp objects, and add a layer of rounded pebbles to reduce water pressure on the liner, prolonging its lifespan.