Design Optics by Foster Grant McKay Blue Light Reading Glasses, 2-pack

If you like to read or work on electronic devices, McKay E-Readers are a great option. They have a classic round frame, offered in versatile black and classic tortoise colors. Slim metal temples update this style while adding durability and comfort. The lenses help to filter up to 30% of potentially harmful blue light* and are available in a range of diopters to meet your reading magnification needs. Features: Combination plastic front with metal temples Temples feature metal spring hinges with plastic temple tips for added comfort Patented lens technology filters approximately 30% of potentially harmful blue light.* Lenses are scratch-resistant Anti-reflective treatment increases clarity by reducing reflections Includes a coordinating soft neoprene case *Potentially harmful blue light refers to the 415-455 nanometer range of the visible light spectrum. The percentage represents the average amount of potentially harmful blue light filtered at 5 nanometer increments in this range. Covered under U.S. Pat. No. 8,360,574. Other U.S. and foreign patents pending. Specifications: Brand: Design Optics by Foster Grant Colors: Shiny black with satin gunmetal temples and shiny black temple tips Brown tortoise with satin brown temples and brown tortoise temple tips Frame Size: 49-18-140 MM Material: Plastic Metal Attention New York Residents: OTC sale of reading magnifying glasses cannot exceed 2.75 diopters in the state of New York.