This easy to install PVC liner is lightweight, flexible and durable. Non-toxic, fish-safe PVC material is reinforced with a mesh weave, which helps make it puncture resistant. Texture slows algae growth and promotes beneficial bacteria. The aquanique 10 ft. x 13 ft. Pond Skins Pond Liner is great for a medium sized backyard pond or water garden. Aquanique PVC liners are 30 percent lighter than average 20 mil liner. This also helps make the liners extremely flexible and easier to handle. Additionally, the PVC material is reinforced with a mesh weave, contributing to its puncture resistance. Another added benefit is that this liner is UV resistant, so it will not fade, even after several hours of exposure to sunlight.