Rain color effect only under light: The 3D window film itself actually has no color and is in a neutral color. With the special 3D laser design, it only shows a colored rain color effect when the light changes from outside when the sunlight hits the film after installation. Privacy protection: Provides protection for privacy and at the same time allows the light to shine through. Privacy Protection Index: 3 stars. Privacy changes with the light. When sunlight is present, privacy increases. When there is no light, privacy decreases. Therefore, it is not recommended to use it in a bathroom or window without light. Without glue: Glue-free and environmentally friendly materials, avoids the release of chemical substances. Static cling, can be installed within minutes (instructions included in the package). Sun protection and anti-aging: It retains heat inside in winter and coolness in summer, reduces heat transfer and blocks 99% of UVB rays, protects your Protects skin from harmful radiation, reduces fading and aging of furniture Easy removal: No residue left after peeling off. This 3D window film can be reused as often as you like, you can attach and remove it again and again