Got this just in time. After a long, hot, dry, summer, we finally got some rain! Usually we have rain here in the pacific north west. But we moved here after living in Southern California for almost forty years. So I guess we brought the sun and heat with us! But the day after our covers for our new picnic set arrived, we got rain! So we're thrilled both with the break in the weather, and the covers. 
The only downside, is, there is a dip in the middle, so after it rains the ducks can swim in our small "pond". So my husband put a box on the table, under the cover. No more pond, but I miss the duck!

Pros: Fits well, doesn't blow off.
Cons: Small dip in middle