[Waterproof and tearresistant Oxford fabric] The IBC tarpaulin is made of highly durable Oxford polyester with a thick PU coating and waterproof strip. PU performs better than PVC, as it is more durable, waterproof and antiUV, softer and more comfortable. The water tank cover has external piping and is doublestitched to improve strength and tear resistance.[Velcro and zipper] To collect rainwater, simply lift the square Velcro on the top of the IBC water tank cover to expose the inlet cover. The outlet side of the IBC water tank 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 water tank cover has 2 large ventilation slots on each side and is designed with a mesh lining. The valve promotes air circulation inside the IBC container lid to prevent moisture formation, which helps keep the tank body dry and extend the life of the tank. The IBC cover has 4 eyelets and 2 tightening ropes for better wind and tear resistance. The water tank cover is extremely easy to clean and can be watered with a hose, dried in the sun or wiped clean. This outdoor tank cover also comes with a storage bag, easy to fold and store for reuse when not in use. [IBC Tank Cover Size] 120x80x116cm(LxWxH). The water tank cover is for 800 liter IBC tank rainwater tank container. The IBC tank cover protects your IBC water tank from UV rays and extends the life of the water tank.