Just finished putting together my patio set (also from Wayfair) today.  I put on the cover and it's more than big enough.  It has several ties at the bottom that you can tie around either the legs of a chair or table.  It should do nicely to protect the set from the sun in the summer when I'm not using it.  Don't know about the winter yet, but I'm sure it will help protect it from the wind, snow and cold.  Appears to be good quality.