These versatile stickers can be applied to a variety of dry, clean, smooth, and hard surfaces such as wood, tile, metal, glass, and more. Ideal for outdoor signs, mailboxes, windows, walls, doors, cars, trucks, posters, scrapbooks, water bottles, luggage, guitars, computers, skis, refrigerators, closets, bicycles, notebooks, room number labeling, school signs, and other creative projects.