Made from premium quality Japanese Glass, the 9H rated screen protector guards against scratches and shattered screens. Defense Glass comes with an easy-to-use installation tool, instructions, wet swab and dry microfiber cloth. By simply placing the alignment tool onto the phone and dropping the glass screen protector into place, your screen protector is installed perfectly the first time, with no mistakes. It's that simple. The self-adhering surface will push out any bubbles that may appear under the glass surface during installation. Defense Glass is 0.33mm thin, so it will maintain the clarity and touch sensitivity of your naked iPhone screen.