Blue Light Color Changing For Ultra UV Fashion Color Stylish [KANASTAL] Blocking, Photochromic, Glasses, Sunglasses, Computers, Lightweight, TR90,

Photochromic lenses: Lenses change color depending on the strength of ultraviolet rays from sunlight. They are light gray outdoors and almost transparent indoors, reducing glare. They can be used in a variety of lighting environments, both indoors and outdoors, and do not require replacement of glasses. (Please note that blue light cut lenses are usually slightly yellowish. Please note that the color change and photochromic effect will be weaker in environments with weak ultraviolet rays, such as inside a company, indoors, on a cloudy day, or while driving.) Blue light cut, UV400: Equipped with UV400 lenses, it blocks 99% of UV rays. Protects your eyes from harmful UV rays. Reduces harmful blue light from computers and smartphones. Reduces eye fatigue even with long-term use, providing double protection for your eyes. Can be used as PC glasses indoors and as sunglasses outdoors, serving two purposes in one. Excellent material: The slender metal frame enhances the texture and provides high durability. It is not likely to break even after years of use. The nose pads are also made of silicone material to reduce the burden on the nose. You will not feel any pressure even when wearing them for a long time, making them ideal for use in a variety of situations such as work, study, and outdoor activities. Classic fashion square type: Classic square type glasses combine stylishness and practicality, unisex and easy to match with various styles, can be used by people of all ages. It is also useful for various scenes such as traveling, driving, golf, fishing, cycling, mountain climbing, sailing, etc. Size: Lens width: 50 mm (the width from the left edge to the right edge of the lens does not include the frame); Lens height: 41 mm (the height from the top to the bottom of the lens does not include the frame); Overall width: 143 mm (measured from left to right at the widest part of the glasses frame); Bridge width: 20 mm; Arm length: 151 mm; Weight: about 22g; Note: Due to artificial measurement, there may be 2-3mm error.