Clear Film Not Colorful - The 3D window film itself does not actually have any color . However , with special 3D laser design it will show a colorful visual effect when sunlight hits the film after installation . Perfect for DIY home decoration. Static Cling Design - No chemical sticky glue , no harmful substances release . Static cling design , super easy to apply and remove without any residue , no damage to windows surface . Also , it can be reused if not be damaged or smudged , very cost - effective and environmentally friendly . Bird Alert - The decals break up reflections on the glass and alert birds away to avoid window strikes. Easy Application - Unlike traditional glue window film , static cling window film only need some ( soapy ) water to apply , you can adjust position as you want , no need to worry about making mistake during installation. Important Notice - This window film can only used on smooth surface . Please use a hair dryer to soften window film under cold winter . Please remove backing before using . More water will help to stick and don t forget to squeeze out all water and bubbles . Specification: Material: PVC Color: Clear Size: 20x20cm/7.87x7.87 inch Package Includes: 4 Pieces Window Stickers Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement.