Description: HIGH-STRENGTH LIGHTWEIGHT MATERIALSWe've decided to produce our collection from the high-grade Japanese TR90 used in aerospace technology as it has the highest strength-to-weight ratio of any metal. This also means our glasses only weigh 17.05 grams. You can wear them for hours and forget you have them on. Intelligent zoom reading mirrorThe 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. Suitable for a variety of occasionsAnti-blue light 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 Specifications: Material: PC Lens material: resin lens Package Included: a pair of glasses