Garden pond sheeting is used in order to hold the water required for pond construction within the pond. Since the sheeting needs to remain sturdy over a long period of time and must withstand the pressure of the water, its material properties are particularly important. In most cases, multiple layers of different materials are laid down in order to provide the optimal pond design. The sheeting itself often consists of polyethylene, EPDM (synthetic rubber) or PVC, under which a layer of fleece is often laid which protects the sheeting from damage from sharp roots and stones. Depending on the desired preparation, garden pond sheeting can be delivered in rolls, as completed sections or in special sizes.