This unique sunshade material effectively blocks harmful UV rays, providing passenger protection. This sunshade is self-supporting. A combination of static electricity and atmospheric pressure form a bond with car windows. The hotter the sun is, the firmer the sunshade bonds against car windows. No adhesive tape is required to hold them in place. The sunshade is reusable and provides smooth, wrinkle-free coverage. Manufactured from strong, high-quality PVC film for easy cleaning and long-lasting quality.