5 LAYERS LONG LASTING MATERIAL: The water pressure tank cover has five layers of material, 1 layer of 600D waterproof oxford fabric, 2 layers of insulated sponge, 2 layers of aluminum foil, tank cover is long lasting and can withstand any weather, keep your tank free from freezing in winter FITTING DESIGN: The well pump cover is designed with side openings and bottom 3-hole hook and loop and fastening, which makes well pump cover fit the well pump more closely and keep the tank warm and insulated better USABLE IN ALL WEATHER: The water tank cover can be used in all kinds of extreme weather, snowproof, weatherproof and UV , keeping your water tank in good condition and working all year round CUSTOMIZED SIZE: The size of our tank cover is 24'' Diameter X 34'' Height, please measure the size of the tank before use, due to the presence of piping, you need to reserve some space for the cover to fit better with the tank ENHANCED LIFE AND CUSTOMER SERVICE: The use of window well cover increase the life of your window well, keep it free from freezing and wind, and keep it running well. If there is any question about the window well cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.