Unbreakable environmentally friendly TR90 (plastic titanium) rims TR90 is a material that is super tough, wear-resistant and resilient, so that the frame cannot be easily deformed or damaged. These blue light locking glasses are made of TR90 frame, with anti-blue light and anti-radiation coated lenses and all quality details that guarantee you a perfect wearing experience.<br> Product dimensions: lens width: 56 mm (2.20 nches), lens height: 52 mm (2.05 inches), arm length: 147 mm (5.79 inches), nose bridge: 20 mm (0.79 inches).<br> Anti-blue light and anti-radiation coated lenses the lenses coated with anti-blue light and anti-radiation are best used for long hours of computer use to reduce symptoms of eye strain and maintain natural sleep patterns. The original non-prescription lenses can be replaced with progressive lenses in any store.<br> Comfortable to wear lightweight and durable. These stylish round glasses are suitable for both small faces and large heads as the temples and nose guards are adjustable. You can wear our glasses for extended periods of time in front of digital screens or on your upcoming trip out of town.<br> Gift idea package blue light lenses x 1, microfibre bag x 1, microfibre glasses cleaning cloth x 1, blue light test torch x 1, blue light test card x 1, glasses set x 1, beautifully designed case x 1. It is also ready gift wrapped, making it a wonderful yet practical gift idea for friends and family!