UDriveway/Road stickers are specially formulated to stick on ground surfaces such as asphalt or cement and last a looooong time depending on the wear it receives. In most cases, the more it gets run over by a car or foot traffic, the more it gets embedded into the bumpy surface and longer it lasts. Cut by hand so some small imperfections may exist. Adhesive coated foil is topped with a durable white finish topped off with tiny glass beads for great reflective visibility at night. These stickers have been known to give warning of a pothole/potholes ahead...so be careful when you see one out there.