VEVOR LLDPE Pond Liner 20x25 ft, Pond Liner 20 Mil, Fish Pond Liners for Waterfall, Pond and Fish PondsProduct Features LLDPE Material The pond liner is made of LLDPE material, pro environmentally, sunlight proof, weather proof. It can restrain the penetration of harmful substances into the pond and give your fish and plants a secure living environment. 20 Mil Thickness This small pond liner is strong enough to withstand extreme weather conditions, more durable, tear proof, and puncture proof. In addition, good waterproof performance can effectively