heavy duty pond liner made from durable HDPE Thickness: 0.12 mm (5 mil) Withstands extreme weather and longterm outdoor use Environmentally friendly and safe for fish and plants Flexible and adaptable Easily bends and folds to fit almost any pond shape Can be cut to the required dimensions for a precise fit Easy to use Bottom layer provides a flat surface to reduce soil buildup No tools required for installation surface designed to accommodate a layer of round cobblestones for a finished look Protective and water quality oriented Prevents harmful substances in soil from penetrating the pond Helps keep water clean and clear Supports a healthy natural environment for wildlife and plants Facilitates straightforward pond cleaning and maintenance Practical applications Outdoor garden ponds for fish and plants in backyards or patios Irregular or curved ponds, water features, or landscapes with rock and cobble designs Ponds requiring a flat base with a cobblestone finish for a tidy, natural appearance