420D Thick Material: Our tote cover is made of 420D durable polyester material, which is highly resistant to UV rays and will not penetrate even in direct sunlight, and can protect the water tank well. In addition, the ultra-thick material also has good waterproof, rainproof, snowproof and windproof performance. No Algae Formation: With the help of the protective cover of the IBC tank, the storage tank is largely prevented from algae formation. In the sun, it helps to heat water. Zipper and Velcro Design: There is a 30cm cover on the top of the tank cover, and there is a zipper in the middle, which can be opened at any time can and is easy to install. It's also very handy when you want to remove the cover. It's not easy to get blown away by the wind and get into the dust or gravel. Durable and Double-Stitched Construction - Our 1000L tank covers are extremely durable and rot-resistant, and the double-stitched edge construction is more durable and tear-resistant. Perfectly Fits 1000L Tank: The size is about 120*100*116cm, perfectly fits the 1000L tank 1000L water butt. There is a drawstring at the bottom, which can be easily adjusted to fit the IBC tank when using, and also protect the tank well.