1. Double-sided printing: These anti-collision window stickers are in the shape of a butterfly, with bright colors on both sides, vivid and vivid, visible inside and outside, and can be used on both sides as a beautiful decoration; 2. Just place these flowers on the inner surface of the window to get the job done, no adhesive required 3. Reliable material: These crash window stickers are made of self-adhesive vinyl, non-toxic and odorless, you can take it off anytime 4. Note: When you attach the window stickers to the glass, please make sure they are no more than 6 inches apart to minimize the birds knocking on the windows; suitable for sticking on glass panels, sliding glass patio doors, On a porch door or bay window, it can be used as a mirror to reflect the sun's rays