Size: The applicable size of the 800L water tank is: length 120 * width 80 * height 116 cm. The size of our 800L anti-UV tank cover is 5-8 cm larger than most waterproof covers on the market (if the size is too small, your cover will tear easily), please check the size of your tank before purchasing. PREMIUM MATERIAL: Water collector protection cover is made of 210D Oxford fabric which is weatherproof, waterproof, UV-resistant and tear-resistant. Even in sunny weather, the 800L tank cover provides excellent UV protection, reduces the growth of natural organic matter in sunlight, and largely prevents algae growth in storage tanks. PERFORMANCE TESTS: The rainwater tank cover has withstood extreme durability tests of hail, storms, and large amounts of water, and the Tank Protective Cover has stood the test with distinction: not a single crack has oozed water. You can safely leave the tank on your garden and lawn. UPGRADE DESIGN: This 800L tank cover has an open top and bottom design,