The Vevor pond liner is designed for outdoor ponds and water features, offering a durable 3-layer construction with PE outer layers and an HDPE middle layer. Its 14 mil thickness helps reduce leaks while conforming to a variety of pond shapes. Reinforced edging and four corner metal buttonholes support easier installation and dependable outdoor use. It is suitable for backyard ponds, landscape ponds, water gardens, waterfalls, and fountains. The liner can also be trimmed to better fit your specific pond layout.