The pond membrane is made of HDPE, which can provide strong and durable protection, and has high flexibility. After correct installation, it can be thermally welded to meet specifications and prevent water from passing throughPond FilmMaterial: Two Cloths And One FilmLow temperature resistance: -28°CHigh temperature resistance: 130°CWaterproof index: 100%Packing list: pond film x 1Application:The protective layerMoisture barrierAttenuation tankIndustrial location liningLandfill lining and containmentPond, stream, lagoon or canal liningTips: Fold it before/after use and place it in a flat, dry place to avoid being damaged by objects