Material and protection: 0.12 mm (5 mil) fish pond liner with flexibility and ductility. Resists tears and punctures from sharp stones, providing waterproof, leakproof and UVresistant protection for a safe environment for your fish and plants. Easy to cut and fit: Easy to install and use. Its flexible stretchability adapts to any pond rock contours and irregular edges, and it can be cut to the required size to match your pond shape. Durable and weather resistant: Resistant to UV rays, sunlight and temperature changes. Will not crack and is easy to clean. Wide applications: Suitable for backyard ponds, waterfalls, reservoirs, water features, fountains, streams, landscaping, fish ponds, and water gardens. Also usable as roof tarpaulins, architectural decoration dustproof cloths, and for plant pergola projects. Use scenarios: Scenario 1: Install or a koi pond with irregular rock edges by cutting the liner to size and laying it to create a waterproof seal that protects fish and plants. Scenario 2: Create a garden waterfall or stream. The liner conforms to contours and resists outdoor exposure, maintaining a leakproof water feature. Scenario 3: Apply the liner to other outdoor projects such as water features or roofs, or use it as a dustproof cloth for architectural decoration and plant pergola applications.