Durable D+ tempered glass and Special oil-resistant processing helps your phone free from oil, fingerprints, water and other stains and makes the film easy to clean. Bubble-Free adhesive for easy installation and no leftover residue when you take it off. Simple instructions allow for quick and hassle free installation. Dry application with no spray needed to apply. There is a small gap from the edge of screen protector to Phones edge to ensure it is compatible with most case.