ANTI-BLUE LIGHT and ANTI-RADIATION COATED LENSES The anti-blue light glassesand anti-radiation coated lenses glasses for eyes strain are best used for long hours of computer use to reduce symptoms of eyestrain and maintain natural sleep patterns. The original non-prescription lenses can be replaced with progressive lenses at any store. of eyestrain and maintain natural sleep patterns. The original non-prescription lenses can be replaced with progressive lenses at any store. UNBREAKABLE ECO-FRIENDLY TR90 MATERIAL TR90 is a kind of material which is super toughness, wear-resistance, stress-resistance, thus the frame is not easily deformed or damaged. These blue light blocker glasses are made of TR90 full rim combined with durable half metal frame, anti-blue light and anti-radiation lenses, all the quality details ensuring you a perfect wearing experience. PROTECT YOUR EYE: Anti harmful blue light , screen flicker, anti-fatigue, provide all-day protection,without getting that harsh yellow found in other glasses STYLISH PATTERNS AND RETRO FRAME DESIGN The patterns and retro frame shapes are designed by the designer team. The fashion frames can be matched with all kinds of facial forms. The multiple patterns and colors can be matched with different outfits in a daily fashion.