This is the optical quality, single vision MV Optical Model 65 with CR39 optical reading lenses. This is a classic, rounded, preppy, frame with slight horn rimmed corners. Model 65, by the experts at Multi-View Optical are a very high end, optical quality acetate frame sized for an average head size (unisex). These single vision CR39 acrylic lens reading glasses are available in any power from +1.0 up to a +2.0. A CR39 optical lens is the latest in reading lens technology: Impact Resistant, Thin Light Weight, scratch resistant and includes 100% UV protection. Style 65 has a smooth acetate finish with spring hinged temples. Available in classic Tortoise or Shiny Black. Includes a clam shell design hard protective case. Style 65 is sized for an average head size. Here's the optical sizing scoop on Style 65: Lens: 49mm, Bridge: 22mm, Temple: 140mm