When you want to see far away, you can flip the lens directly to the top, which is convenient and practical. Specification: Lens material: Anti-blue light resin lens Frame material: PC Applicable people: women, men Color: black, tortoise Degree: 1.0x, 1.5x, 2.0x, 2.5x, 3.0x, 3.5x Features: Flip structure, reversible lenses, easy to wear after repeated opening and closing tests Anti-blue light lenses, high light transmittance, clear vision Integrated nose pads reduce the burden on the bridge of the nose and are not easily deformed PC glasses frame, non-slip, not easy to deform, strong packing list: 1x reading glasses 1x cleaning 1x glasses case Notice: Do not use paper towels, towels, clothing or alcohol to clean reading glasses. When the glasses are not in use, please put them in the storage box to avoid unnecessary scratches on the lenses and affect their use. Due to manual measurement, there may be an error of about 1 3mm, please understand.Transparent lens The lens is clear, hard, and scratch-resistant, with true color reproduction, no distortion of vision, clear vision, UV400 protection, and not easy to be damaged and scratched. Lens width: 5.8cm 2.3in, lens height: 3.6cm 1.4in, nose bridge: 1.6cm 0.7 0.6in, mirror arm length: 14.5cm 5.7in, total frame width: 13.9cm 5.4in. Classic square frame design, plastic temples, integrated nose pads, no pressure on the nose, soft and comfortable, not easy to fall off, no pressure to wear, no pinch on the face. Computer reader, anti-dizziness, anti-ultraviolet, adopts advanced anti-harmful blue light lenses, relieves eye fatigue, relieves headaches, and allows you to enjoy a quiet and deep sleep. Fashion design style, very personalized, the lenses can be flipped, so you don't need to take off your glasses to see far away! Very convenient and practical.