PREMIUM MATERIAL: The anti-collision window sticker is made of high-quality PVC electrostatic film, which is durable, non-toxic and odor-free. They dont leave any residue on the glass because they are static. Double Sided Printing: Bird window decals are brightly colored on both sides the bright colors of the window decals can be seen from the outside and inside apply them to the inside surface of the window without adhesive. Easy to paste and reuse: Using the principle of electrostatic adsorption, no glue is required during use, these window stickers can be stuck on glass windows, glass doors, refrigerator doors or other smooth objects. The surface is stable and can also be easily removed without leaving any marks, and can be reused. Easy to use: spray water on the glass, peel off the window stickers from the backing and place them on the windows in any design you like, if you want to rearrange them just peel them off and move them around. Wide application: Colorful bird butterfly window stickers can not only decorate balconies, glass, doors, walls and windows, but also prevent birds from hitting the windows. Vivid butterfly and bird stickers are the best choice for home decoration.