This roller shade looks pretty and is definitely effective at blocking the sun and keeping rooms cooler. The tie-down plastic inserts (that go into the metal rod) are not constructed very well and they easily come out when the rolled is tied sown, so I needed to apply some marine glue on them and now they stay in the rod. You will certainly need to tie the roller down since it's very light and it moves back and forth a lot(the loud noise of the rod banging everything it finds in its way is not very relaxing...) 
Hopefully it will last a long time in the Southern California hot & sunny weather...