The Professor Multifocus Computer Reader features a retro yet simple rectangular frame style. Functional 3 magnifying powers in 1 lens allows you to keep your glasses on for different tasks throughout the day. No more switching your readers between reading a text on your phone and working on your computer. Anti-reflective coating helps to reduce eye strain, dry eyes and headache. Neck hanging lightweight frames with longer flex sunglass temples fit around your head comfortably. Fit Medium to Large Head sizes. PLEASE NOTE: In order to produce these multifocal lenses with finite accuracy and the best user comfort, the lenses have a very slight and "nearly invisible" 1 mm circle shaped etching on outside edge of the lens. This 'invisible' etching is guaranteed to be outside your field of vision and cannot be seen. The etching is also barely noticeable when someone looks at you. With this revolutionary technology, we are able to create 'no line' multi-focals that look great and comfortable to wear.