High-Strength Lightweight Materials------It has the highest strength-to-weight ratio of any metal. This also means our glasses only weigh 17 grams. You can wear them for hours and forget you have them on. Anti-wear, anti-drop, lens light, resin HD, optimized thickness design, light weight, ultra-thin, sturdy, scratch-resistant, waterproof and oil-proof, providing you with more reliable safety protection. The progressive lens has no obvious dividing line between the focal points, smooth and no image jumping, no need to remove the glasses, moving the line of sight from top to bottom, you can see the far and near and the different visual areas of the lens. Things in different distances in the middle. Anti-blue light progressive multifocal glasses for indoor or outdoor, all-weather wear, for people with presbyopia problems, especially when reading books, newspapers, watching TV, playing games, traveling, gathering, fishing, this is A thoughtful and practical helper. They can protect the eyes in very little light and sharp vision (inside or pre dawn) through to the sunniest of conditions. Features: 1. Our glasses only weigh is light. You can wear them for hours and forget you have them on. 2. Anti-wear, anti-drop, lens light, resin HD, optimized thickness design, light weight, ultra-thin, sturdy, scratch-resistant, waterproof and oil-proof, providing you with more reliable safety protection. 3. The progressive lens has no obvious dividing line between the focal points, smooth and no image jumping, no need to remove the glasses, moving the line of sight from top to bottom, you can see the far and near and the different visual areas of the lens. Basic parameters Frame material: PC Lens material: resin lens Commodity type: Reading glasses Weight: 17g Package content: 1 x Reading Glasses Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement