Robust and durable, adjustable frames are more suitable for long-term wear and reproduce colors. Adjustable spring hinges adapt to different face shapes without putting strain on your face. The reading glasses block over 98% of harmful blue light from computers, cell phones and televisions. Enjoy digital time without worrying about eye strain, blurred vision and headaches. Get better sleep and enjoy deep sleep. HD glasses &amp; ProfessionalHigh-definition glasses are professionally and accurately configured: anti-blue light computer glasses for men, anti-blue light glasses for women 1.0 1.5 2.0 2.5 3.0 3.5 4.0< /span> 4-Pack Anti-Blue LightSuper Value Reading Glasses Clear, stylish matte glasses that match different clothing styles. Keep a pair of glasses on your desk, in your bag, next to your bed, and in your favorite reading spot. These reading glasses are the perfect accessory for you.