3M™ Privacy Filters allow you to work privately in public places. 3M™ privacy technology darkens on-screen data when viewed from the side, and provide higher clarity than competitive filters. This 3M™ Privacy Filter is custom-cut for the unibody Apple® 13 inch Macbook Pro® manufactured in 2009 or later. The filter application system features an optically clear adhesive designed specifically for display screens. Testing proves that, when kept clean, filter can be repositioned hundreds of times.