I have a deck that gets a lot of afternoon sun.  It's so hot that we don't use the deck in the afternoon.  So I decided to purchase This canopy umbrella to provide some shade.  I must say I  was pleasantly surprised.  The price was great.  Yes it needs to be weighted  down, but that was easily accomplished by purchasing weights. (see photos)   It's pretty well made.  Not cheap looking.  And does the job.