Very durable and it keeps things dry. I ordered it to cover my sectional set (5  pieces) so it is quite big but it works. We have been having weeks of rain so it is working. It would be nice if they made this brand in a sectional size in the future. I don't care for the individual pieces that you have to put over each section of furniture individually and that is why I bought a one piece cover. The straps on the bottom fit over my sectionals feet to keep it in place. Also because it is a little large some areas tend to pool the water but I just help to drain it off in between and it keeps everything dry.