The McKinley blocks those blue rays from your devices that give you eye strain. So many hours are spent on phones, tablets and computers and our eyes get very weary and strained. Glasses with blue blocking properties are able to block the harmful rays. You may want to order a pair to see if they can help you, too. The frame comes in black, translucent gray or clear. The frame has a spring hinge for a flexible and comfortable fit. Frame Measurements: 5 1/4" x 1 3/4" (temple to temple x height of lens)