Reflect and filter blue light, prevent color distortion, 7-layer anti-reflective coating to reflect and filter blue light, reduce eyestrain and sleep better. High light transmittance with no noticeable yellow tint to prevent color distortion, minimize glare from digital screens. Thinner and durable, the multi-layer coating is combined into a single layer with a thickness of only 10um, increases the surface hardness of the lens, prevent scratches and abrasion. Magnification glasses option, with +0.25 to + 4.0 magnified lenses, helps you more clearly see objects that are 12-14 inches away (screens, books, laptops, etc.) if they were otherwise out of focus or cause further eye strain. Classic oval frame design, ultra-lightweight, universal size fits most face shapes. Rest assured to buy, we stick to pay attention to product quality, any problem for this product, just contact the seller without any hesitation and we will provide you the best service!