Dear sir or madam welcome you to my store, our products have many advantages, and sincerely hope that we can serve you. The thickness of the Pond Liner is 0.3mm, which is sufficient to withstand long-term long-term use. Excellent UV resistance, friendly to fish and plants, it adds a layer of support to your outdoor water function. It is widely used in chemical ponds, sewage ponds, landfills, aquaculture, agricultural water saving, reservoirs and canals. specification: ▶product name: Yeanee Pond Liner ▶Color: black ▶Material: HDPE ▶Size:Various sizes ▶Package content: 1 x Yeanee Pond Liner. service: 1. This product is manual measurement, there are some errors, please refer to the actual product. 2. If you have any questions about product quality, missing items, scratches or any other issues, please contact us immediately by email. We will provide a satisfactory solution within 24 hours. 3. If you are satisfied with our product, please give it a 5-star rating.