Jonathan Paul photochromatic changeable lenses strength 3.5 smoke

Progressive clear lens that darkens automatically in bright sunlight and returns to clear indoors, full reading strength at the bottom of the lens to comfortably read materials 14"-16" away. Blue-light blocking coating, anti-reflective coating, includes slip-in storage pouch. One size fits most. COO: Imported. Includes lenses and slip-in storage pouch Blue-light blocking and anti-reflective coatings; lenses darken automatically in sunlight; full reading strength One size fits most Measures approximately 1.85" x 0.82" x 5.51"