Blue Light Blocking Color Computer Ultra UV Fashion Fashion [KANASTAL] Glasses, Dimmable, Changing, Non-Prescription, Glasses, TR90, Lightweight, 19g,

Photochromic Sunglasses: KANASTAL photochromic sunglasses automatically adjust the color density depending on the strength of UV rays. The lenses are almost transparent indoors, and when outdoors on sunny days, they change color to light gray, blocking out harmful UV rays and reducing eye strain. They can be easily adapted to rainy, cloudy, or sunny weather. Blue light cut, UV400 protection: The glasses use high-quality blue light cut transparent lenses, which are highly impact resistant and scratch resistant. They can block harmful light from screens such as smartphones, computers and TVs. They effectively relieve eye fatigue and protect your eyesight. These are convenient glasses that serve two purposes in one. Lightweight TR90 frame: The frame is made of lightweight and flexible TR90 material. It has the advantages of being ultra-lightweight, elastic and stable. The ergonomic design is designed to be comfortable to wear as UV protection sunglasses. It gives an excellent fit without putting strain on the nose or ears. 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. Product Specifications: Lens width: 49 mm (the width from the left edge to the right edge of the lens does not include the frame); Lens height: 40 mm (the height from the top to the bottom of the lens does not include the frame); Overall width: 138 mm (measured from left to right at the widest part of the glasses frame); Bridge width: 20 mm; Arm length: 147 mm; Weight: about 19 g; Note: Due to artificial measurement, there may be 2-3 mm error.