These worked AMAZING for the month or two that I had them. But it did not cover the entire window (I drive an Equinox), so I had to move it around on the window every once in a while depending on when and where I was driving (to keep the sun out of my baby's eyes). After a couple months, because I had moved the shade around a time or two, the suction cups lost their suction! It does NOT stay up on the window anymore! I do have the option the hook the shade to the window. But to keep the shade against the window, I have to suction the bottom of it. And that suction has lost it's power too! So it would just bang around if I turned or hit a bump.