Minimum Order Quantity 100 Square Meter Material HDPE Size 6 FT x 12 FT Usage/Application Water Storage Color Black Thickness 5 mm Is It Waterproof Yes Finishing Polished HDPE liners can be used in ponds, troughs, canals, and more for water retention and containment. They can also be used in algae ponds, brine ponds, golf course ponds, and more.