My original canopy cover only lasted about 2 years.  The replacement did not come with instruction, so we were struggling to try to fit the canopy under the metal bar.  Finally, my husband decided to unscrew one of the metal arm to make it work.  It was very difficult to fit the four corners to the canopy, but it fitted perfectly when its done.  Good material.  I hope it will last more than 2 years.  I gave a 4 star because it didn't come with instruction.