42 Moon Star Clings: Enough to meet your various needs and daily replacement needs, don't worry about changing products sooner, and make your room full of rainbows. Can be applied to decorative Windows alone, or can be combined to decorate large glass Windows. Simple to Use: Our window sticker doesn't need to use adhesive, it sticks to the glass surface through the principle of static electricity, wipe the glass surface clean, spray some water, remove the back film and stick it on the glass, it's simple and fast. Non-Adhesive: These window stickers are made up of high quality PVC, strong and durable, not easy to deform or break, no adhesive, no remains, if you need to clean your windows, you can take them off, clean them and then re-install them, reuse them, no waste. Protect Flying Creatures: Save the Birds. Birds can't see glass, these beautiful decals prevent them from crashing into glass or sliding doors by emitting visible color, reducing damage to them and better saving and protecting your beautiful feathered friends.