On mine, there is a cord at each corner that you attach to a ground stake. Then there are velcro strips on the inside that you wrap around the uprights. If the zippered flap is closed, it will sort of balloon, but stay in place. However, if you open that flap, say on a nice sunny day when it gets too warm inside with the flap closed, and there happens to be a strong wind (a fairly common occurrence here).....woosh! There it goes! The framework stays in place nicely, but that cover crawls up the frame and bunches up at the far end. I'm thinking about moving it inside my old dog kennel where I can butt it up against the chain link on two sides. But it won't be as convenient there.
