Keeps your personal or confidential information safe from prying eyes You'll see the information on your display while people on either side only see a darkened screen. Custom fit to your Apple MacBook Air 11-inch Includes your choice of two easy-to-use attachment methods Reversible, matte side reduces glare and reflections Lightweight, thin, frameless design Protects display from dirt, debris and scratches Cleans easily with a soft cloth and water Great for high traffic areas such as airports, airplanes, commuter trains, coffee shops and other public places.