[Waterproof and Tear-Resistant Oxford Fabric] The ibc tarpaulin is made of very durable Oxford polyester with a thick PU coating and waterproof strip. PU performs better than PVC, because it is more durable, waterproof and anti-UV, softer and more comfortable. The 1000l water tank cover has exterior piping and double stitching to improve strength and tear resistance [Velcro and zipper design] To collect rainwater, simply lift the square velcro on the top of the 1000l IBC water tank cover and the inlet cover will be exposed. The outlet side of the IBC water tank protective cover has a zipper, which can be opened flexibly depending on the position of the outlet to check the water level in the tank [Prevents condensation] The 1000l water tank cover has 2 large ventilation slots on each side and are designed with mesh lining. The vent promotes air circulation inside the IBC container cover to prevent moisture condensation, which helps keep the body of the tank dry and prolong the life of the tank. [Easy to Clean and Store] The 1000l water tank protection cover is extremely easy to clean and can be watered with a hose, sun dried or wiped dry. This 1000l outdoor tank cover also comes with a storage bag, easy to fold and store for reuse when not in use [Size of the 1000 liter water tank cover] 120x100x116cm (LxWxH). The water tank protective cover is for 1000 liters IBC tank rainwater tank container. Water tank cover 1000l protects your IBC water tank against UV rays and extends the life of the water tank