This new Flex Frame High Power Reader comes in strengths 4.50, 5.0, 5.50, 6.0. The frame is a TR-90 which strong, flexible, and lightweight. The weight of this style is so important for people who need powers above 4.0. Often the lenses are high power readers are heavy and become uncomfortable over time. This TR-90 frame makes them light and comfortable. The lenses are 100% UV protected. Frame Measuements: 5 1/4" x 1 1/4" (temple to temple x height of lens)