Ordered this for our holiday as we are driving 20 hours. I tried the stick on sun shades but they kept falling off. You need to fix these with velcro and you can remove them anytime. The important thing is that you can have the sun shades on whilst the windows are down and they are protective against bugs and mosquitoes too. I washed them in the washing machine, they came out fine. Just make sure you use a washing bag to separate them from anything else. It comes in sizes, so you can find the one that fits your car.