Simple, perfect fit, good construction.  Just what I wanted for my back porch!  So far they've handled the weather thrown at them!  Direct sun = no pealing or discoloration (I have white tables).  Rain = beads right off, but what does collect hasn't damaged the paint or metal.  Tree pollen and other stuff = wipes right off and doesn't leave coloration behind.  I bought two and now I wish I bought three!