【Excellent Thickness 210D Material】 - Our IBC tank cover is made of thick 210D polyester. In addition, this ultra-thick material is highly resistant to rain and snow. Even on sunny days, the 1000L tank cover provides excellent UV protection, reduces the growth of natural organic matter in the sun, and significantly prevents algae growth in storage tanks. 【Durable and 【Double-Stitched Construction】 - Our IBC tank covers are extremely durable and tear-resistant. The double stitching on the top of the cover is more durable and tear-resistant, and the edge has a robust Velcro closure. The zipper in the middle makes it easy to open and put on. 【Perfect Fit for 1000L IBC Tanks】-- Compatible 1000L Water Tank: Length 120cm x Width 110cm x Height 116cm. The bottom has a drawstring that is easy to tighten to fit 275 gallon IBC tanks when in use and effectively protects the tank. (If the size is too small, the cover will easily tear.) Please check the size of your tank before purchasing.