The Lakeville Bifocal with Driving Lens is the answer for those that want a bifocal for driving but need to reduce glare. Some people prefer the brown driving lens for all outdoor activities as it does reduce glare for most people better than the gray lenses. The frame on the Lakeville has a spring hinge for a flexible and comfortable fit. The lenses are 100% UV protected. Frame Measurements: 5 1/4" x 1 3/8" (temple to temple x height of lens)