Two sets of window stickersThere are two sets of stickers, one is a bird, the other is a circle, you can combine them into beautiful shapes as you like Transparent Matte DesignSpecially designed reflective material in each window reflects the suns ultraviolet light as a brilliant warning sign for birds. To humans, they appear like matte or etched glass Beauty and PracticalBig Bird window stickers have various cute bird shapes, which are tender and can attract peoples attention; Designed with reflective material on the surfaces, they can reflect the suns UV rays and warn birds Disassembly and assembly at any time Clean the glass and spray a mist of water on the glass, then remove the anti-collision window film and place it on the glass; If you want to rearrange the window stickers, just peel them off and move them around so they dont leave ugly marks Wide Range of UsesBird warning collision stickers are suitable for home, shops, classrooms, offices and other places, they are translucent and can be stuck on windows, glass doors, tiles and other smooth surfaces