The Bifocal Reading Sunglasses.

These 1 oz. polarized bifocal sunglasses allow you to read outside in bright sunlight, and eliminate the need to wear a pair of sunglasses over reading glasses or bifocals. The sunglasses provide 100% UVA, UVB, and UVC protection, and the high-definition impact- and scratch-resistant polycarbonate lenses are four times stronger than acrylic lenses, yet are 15% lighter, providing superior visual acuity as they allow only 16% of visible spectrum light to pass. The bifocal lenses on these glasses are on the back side of the lens, so the glasses are indistinguishable from normal sunglasses. The durable frames--developed using 35 individual steps--are made of a lightweight nickel-and-zinc alloy, and use high-quality spring hinges. Includes crush-resistant case. Please specify reading strengths of +1.5, +2.0, and +2.5. Order one reading strength up if between strengths. Case: 6 1/4" L x 2 1/2" W x 2 1/2" D. (3 1/2 oz.)