Half-rim Computer Glasses for Men Women Reading Blue Light Filter Eyeglasses Product Features metal frame plastic lens non-polarized Lens width: 54 millimeters These premium frames with flexible spring hinges are crafted from a combination of metal to create the most durable, lightweight, flexible and ergonomic eyewear Light Yellow Tinted Lens- Block 29% within 500nm, block 32% within 490nm, block 33% within 480nm, block 35% within 470nm, block 36% within 460nm, block 37% within 450nm, block 39% within 440nm, block 51% within 430nm, block 93% within 420nm, block more than 99% within 400nm-410nm. No color distortion Protect Your Eyes- Anti-glare lens coating prevents insomnia and macular degeneration. Anti-scratch, anti-reflective, anti-screen flicker, anti-glare, anti-fog coated; Electromagnetic ray, UVA & UVB blocking & Relief Eye-Strain Wearable unisex minimalistic style is flattering, slim and simple semi-rimless look is for men and women 100% Customer Satisfaction : Feel free to contact customer service if you have questions Product Description DIMENSIONS: Frame Material: Metal Overall Width: 5 5/16 inches (135mm) Temple Length: 5 5/16 inches (135mm) Lens Width: 2 1/8 inches (54mm) Lens Height: 1 5/16 inches (33mm) Frame height: 1 5/16 inches (34mm) Nose bridge width: 7/16 inch (16mm) Spring hinge: Yes Lenses: Aspheric Head size: Medium to wider. Rx-able frame ABOUT US Designer Inspired Frame Lightweight For Superior Comfort Excellent Durability and Craftsmanship Optically Correct and Spring-loaded Hinges The pupil distance(PD) is 59-63mm, the deviation for pupil distance(PD) less than 2mm, the deviation for strength less than 0.02, the deviation for lenses's horizontal line less than 1mm CARE To avoid damage, never contact with acid, and avoid using paper, towels, clothing, alcohol, household detergents or soaps to clean your reading glasses. While a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Our stock all ships from our US-based warehouses.Shipped via UPS or USPS(depending on location and package weight) Unless stated otherwise, all orders will ship within 24 hours of your payment being processed.Check our feedback to see the great reviews of FAST shipping we offer.Shipping is always FREE If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. If you have any queries, please contact us via eCRATER. We usually respond within 24 hours on weekdays. Thank you for visiting our eCRATER store!