Product Specification: Rim:Full rim Materials:Plastic Shape:Cat eye Frame Weight:24.70 g RX Range:-20.00~+12.00 PD Range:54~78 Progressive:YES Spring Hinge:NO Product instruction: (1) Why do we need to filter blue light? ? Blue light from our computers, phones, tablets and other electronic products causes our eyes to not only work harder but puts them at risk of aging faster. ? By wearing blue light blocking glasses, you can limit the amount of blue light that enters your eyes and make your screentime more pleasant. Reduce eye strain, eye fatigue and sensitivity to light during computer term or any other digital time. Protect Your Eyes from macular degeneration and early vision loss, more concentrate on working and learning. ? Voogueme glasses are specially designed to filter out harmful blue light. ? Reduce the symptoms of digital eyestrain Eyestrain, Headaches, sore or tired eyes, and stiff necks are all symptoms of digital eyestrain. Voogueme blue light blocking glasses make screen time more comfortable and help eliminate symptoms of digital eyestrain.?Dimension: Lens Width: 56mm (2.2") , Lens Height: 48mm (1.88") , Bridge Width: 17mm (0.67") , Frame Width: 133mm (5.24") , Arm Length: 143mm (5.62"). ? Using blue light blocking lens that filters blue light and UV, protect your eyes, and reduce eyestrain, dry and headache during use computer, phone, enjoy a better sleep. ?The Cat eye glasses are made of high-quality materials, light , comfortable to wear. ? Fashionable cat-eye shape, these eyeglasses combine cosmopolitan chic with savvy smart style, suit any occasion. ? Made from durable materials, with special bamboo-shaped temples, this frame features its shining five-pointed stars decorated on the corner of the front rim, which shall add more charms to its wearers.