Acetate frame front in tortoiseshell Frame compatible with graduated lenses 100% UVA / UVB protection Non-prescription Blue Light lenses have a special filter to reduce exposure to the blue light of digital devices and sunlight. Blue light is considered harmful up to 455 nm with a maximum toxicity between 415 and 455 nm. Alternative fit Lens-nose-temple measurement: 55-16-140 mm Article comes with dedicated packaging