Firstly Rinse the entire suction cups under warm, almost hot, tap water, shake off excess water. Wipe the targeted surface with a clean cloth, then press the cups onto the desired surface. (Tips: a little water adds a lot of suction power) | Secondly Cut off excess part if necessary. Measure the size of your windshield and make a mark on the sun shade then cut it into a perfect size. (Tips: a knife will work better than scissors) | Thirdly Two installation methods: 1. Attach the sun shade on the passenger side and another single suction cup on the driver side. 2. Attach the sun shade on the passenger side, hang the suction cup directly on the hook. | Finally Grab the handle and pull slowly to the other side to hook the single cup. Or stick the single cup on the other side (if you use the second method in the third step) (Tips: Soaking the suction cup in hot water at 140°F to 158°F for 5 minutes, it will restore performance.) |