to block out the sun's rays for kids, and adults for that matter. They have a dual layer that blocks out 97% of harmful UV rays but doesn't obstruct the driver's view, and they simply cling to the window, no annoying installation necessary."These are the best window shades I've had to dim the sun's rays from my 16-month old.
I've had the rectangular vinyl shade that bubbles; the pull down that hangs from the top of the window with the suction cup to hold it down in place at the bottom only for the suction cup to lose its effectiveness over time; and the rectangular shade that has 2 suction cups to hold it onto the window only for it to often fall on the floor. This shade clings to the window so easily and you can use more than one to overlap for extra coverage. They do not obstruct my view when driving .