MAIVARDAY Round UV400 Sun Blue Light for Driving Men's Sunglasses, Protection, Lightweight, Stylish, Protection, Blocking, Photochromic,

Blue Light Cut Photochromic Lenses: Blue light cut photochromic lenses automatically darken or darken depending on the strength of UV rays. They turn a light gray in bright sunlight to reduce glare, and return to a nearly transparent state indoors or in environments with low UV rays (such as on cloudy days or in a car). (Note: Blue light cut lenses may have a slight yellow tint even when transparent.) Because they seamlessly adapt to a variety of lighting conditions, they are convenient for everyday use when moving frequently from outdoors to indoors. Please note that in environments with low UV rays, such as inside a company or indoors, under cloudy skies, or while driving, the lens color may not change much or may only change slightly. [What is blue light?] Blue light is a type of visible light that has a high scattering rate and is high in energy (blue light between 380nm and 495nm). It is also emitted by the displays of computers and smartphones that use LED backlights, which have become popular in recent years. Blue light has many harmful effects. As a countermeasure, we recommend wearing glasses that block blue light. [Blue light blocking glasses with UV400 protection] Made with high-quality blue light transparent lenses, they have high visible light transmittance and have been inspected by the Japan Optical Spectacles and Popular Optical Instruments Inspection Association (JIS). They block harmful light from screens such as smartphones, TVs, and computers, and block over 99% of UV rays, protecting your eyes. Spring Hinge: The temples feature spring hinges that can be adjusted outward by 30 degrees to fit any face shape. The flexible adjustment naturally conforms to the contours of your face, reducing pressure and strain on your ears and temples even when worn for extended periods without feeling too tight. These sunglasses are ideal for extended periods of wear, such as driving, traveling, and outdoor activities. UV400: These round sunglasses are perfect for a variety of activities, including driving, running, fishing, motorcycling, skiing, hiking, mountain climbing, and cycling. They're the perfect accessory for outdoor enthusiasts and a practical and wonderful gift. They block 100% of UV rays (UVA/UVB), providing effective protection from harmful UV rays. This ensures eye health even during extended outdoor activities.