1.Save birds from window collisions with these sun catchers indoor window sticker window . They break up reflections on the glass and warn birds away in time to avoid window strikes. 2.Just add sunlight!Apply to any window and watch the magic happen when the sun hits this sun catcher decal. This diffraction material will cast beautiful rainbows across the room, to bring rainbows into your home, office or car. 3.The decals stick to the window purely with static cling, not adhesives, just spray the window and the back of the film with water, so they are movable, reusable and never fade.Decals are reposition-able and remove from glass without residue. 4.High quality vinyl prismatic window clings for glass windows,window stickers measure 3-5".We recommend that you place the suncatcher stickers for windows inside rather than outside in the elements. 5.Bird Friendly: care for birds with our winter stickers for glass windows acting as a powerful bird strike deterrent; These decals adhere strongly to windows, yet are easy to peel off without leaving residue behind, ensuring smooth, clean glass, and showing your commitment to protecting birds