LLDPE Pond Liner Pond Liners 20x25 Ft 20 Mil Fish Liner Fish Pond Liner For PondPremium LLDPEHigh TensileExcellent FlexibilityNo LeakageLong LifespanWidely UsedThickness: 20 Mil / 0.5 mm, Size: 20 ft x 25 ft / 6 m x 7.6 m, Color: Black, Material: LLDPE, Lifespan: 10-50 years