Renee's Readers introduces the new photochromic sun reader Sue, available in a Taupe/Dark Beige or Red/Iris combination. This is a high end reader that emanates style and confidence with well-crafted details, and a photochromic lens, what a great sun reader! The lens lightens and darkens based on the UV light emissions. When you walk outside, the lens darkens and helps eliminate glare bright sun. This is a fully magnified lens, not a bifocal sun reader. The photochromic lens is made from lightweight CR39, an aspheric, scratch resistant acrylic. The lenses also include a high end AR (anti-reflective) coating on the inside of each lens. AR coatings are extremely helpful when wearing these in bright conditions. The coating significantly cuts down on glare and helps you see much more clearly in the sun, or inside in harsh lighting conditions. This is a fun and smart look that will have your friends asking where you got these. Includes a hard case and as always, Free Domestic US shipping. Here are the optical measurements: Lens Width: 49mm, Bridge: 19mm, Temple: 145mm