Size: One size fits all, Dollger anti-blue light glasses are ideal for protecting your eyes during long hours of computer use. Its unique super lightweight metal half-frame design is modern and elegant. These glasses feature shock-resistant and dust-proof lenses made of aerospace-grade PC material. In addition, the silicone nose pads are skin-friendly and allergy-free, providing all-day comfort. Use them when working, reading, playing, or engaging in outdoor activities. Includes 1 pair of blue light blocking glasses, 1 cleaning cloth, and 1 glasses bag. Product size: Total width: 138 mm, Lens width: 52 mm, Lens height: 54 mm, Bridge: 20 mm, Arm: 143 mm, Weight: 29g. Cleaning: It is recommended to clean the lens regularly with soapy water or neutral detergent.